Tag Archives: Africa

The importance of photonics (science of light) in African science

A May 14, 2025 essay (h/t to phys.org) written by Andrew Forbes, professor, University of the Witwatersrand, and Patience Mthunzi-Kufa, distinguished professor, University of South Africa, for The Conversation describes the history, current work, and hopes for photonics on the African continent, Note: Some links have been removed,

Light is all around us, essential for one of our primary senses (sight) as well as life on Earth itself. It underpins many technologies that affect our daily lives, including energy harvesting with solar cells, light-emitting-diode (LED) displays and telecommunications through fibre optic networks.

The smartphone is a great example of the power of light. Inside the box, its electronic functionality works because of quantum mechanics [Note; Link removed]. The front screen is an entirely photonic device: liquid crystals controlling light. The back too: white light-emitting diodes for a flash, and lenses to capture images.

We use the word photonics, and sometimes optics, to capture the harnessing of light for new applications and technologies. Their importance in modern life is celebrated every year on 16 May with the International Day of Light.

Scientists on the African continent, despite the resource constraints they work under, have made notable contributions to photonics research. Some of these have been captured in a recent special issue of the journal Applied Optics [Note: Link removed]. Along with colleagues in this field from Morocco and Senegal, we introduced this collection of papers [Note: Link removed], which aims to celebrate excellence and show the impact of studies that address continental issues.

Africa’s history in formal optics stems back thousands of years, [emphasis mine] with references to lens design already recorded in ancient Egyptian writings.

In more recent times, Africa has contributed to two Nobel prizes based on optics. Ahmed Zewail (Egyptian born) watched the ultrafast processes in chemistry with lasers (1999, Nobel Prize for Chemistry) and Serge Harouche (Moroccan born) studied the behaviour of individual particles of light, photons (2012, Nobel Prize for Physics).

The papers in the special journal issue touch on a diversity of continent-relevant topics.

One is on using optics to communicate across free-space (air) even in bad weather conditions. This light-based solution was tested using weather data from two African cities, Alexandria in Egypt and Setif in Algeria.

Another paper is about tiny quantum sources of quantum entanglement for sensing. The authors used diamond, a gem found in South Africa and more commonly associated with jewellery. Diamond has many flaws, one of which can produce single photons as an output when excited. The single photon output was split into two paths, as if the particle went both left and right at the same time. This is the quirky notion of entanglement, in this case, created with diamonds. If an object is placed in any one path, the entanglement can detect it. Strangely, sometimes the photons take the left-path but the object is in the right-path, yet still it can be detected.

One contributor proposes a cost-effective method to detect and classify harmful bacteria in water.

New approaches in spectroscopy (studying colour) [Note: Link removed] for detecting cell health; biosensors to monitor salt and glucose levels in blood; and optical tools for food security all play their part in optical applications on the continent.

Another area of African optics research that has important applications is the use of optical fibres for sensing the quality of soil and its structural integrity. Optical fibres are usually associated with communication, but a modern trend is to use the existing optical fibre already laid to sense for small changes in the environment, for instance, as early warning systems for earthquakes. The research shows that conventional fibre can also be used to tell if soil is degrading, either from lack of moisture or some physical shift in structure (weakness or movement). It is an immediately useful tool for agriculture, building on many decades of research.

The last century was based on electronics and controlling electrons. This century will be dominated by photonics, controlling photons.

Professor Zouheir Sekkat of University Mohamed V, Rabat, and director of the Pole of Optics and Photonics within MAScIR of University Mohamed VI Polytechnic Benguerir, Morocco, contributed to this article.

Light-based technologies have wide practical applications. Wikimedia Commons, CC BY [downloaded from https://theconversation.com/light-is-the-science-of-the-future-the-africans-using-it-to-solve-local-challenges-256031]

Here’s the special issue with two links:

Virtual Feature Issue

Joint feature issue in Applied Optics and Optics Continuum: Optical Science and Photonics in Africa (OSPA)

Zouheir Sekkat, Optics & Photonics Center, MAScIR-UM6P, Ben Guerir, and University Mohamed 5, Morocco (Lead Editor)
Andrew Forbes, University Witwatersrand, South Africa
Patience Mthunzi-Kufa, CSIR, South Africa
Balla Diop Ngom, University Cheikh Anta Diop, Senegal

OR

20 March 2025, Volume 64, Issue 9, pp. 2102-2323; Feat. pp: OSPA1–3; C1–C163  

Enjoy!

UN, will.i.am (rapper, science advocate, and former member of Black Eyed Peas) and Google team up to train young AI and robotics pioneers in Africa

Will.i.am has a bit of a history with regard to his science advocacy, from my October 16, 2013 posting,

New York’s recent comics convention (New York ComiCon, Oct. 10 -13, 2013) featured not only a Twitter hijack of its attendees accounts as described in an Oct. 11, 2013 posting on Techdirt by Timothy Geigner but also a presentation by will.i.am (of the Black Eyed Peas band) about a comic book project, Wizards & Robots, according to David Bruggeman’s Oct. 15, 2013 posting on his Pasco Phronesis blog (Note: Links have been removed),

At this year’s New York Comic Con, Black Eyed Peas musician will.i.am appeared with Brian David Johnson, a futurist who works with (among others) Intel.  They were at the Comic Con to promote their upcoming comic book, Wizards and Robots (H/T STEMDaily).  will sees the project as a means of getting more young people interested in science, technology, engineering and mathematics (STEM) subjects.  STEM is an interest of will’s, brought about by concerns over the future of the kids he works with in some of his charitable efforts:

“Will had been working with inner city kids for his charity i.am.angel, encouraging them to study math and sciences, and was concerned that technological intelligence was outpacing human’s ability to control it. [emphasis mine]

This September 24, 2025 International Telecommunication Union (UN agency) press release (also received via email) and available on EurekAlert describes wil.i.am’s latest venture,

The International Telecommunication Union (ITU) – the United Nations agency for digital technologies – Google, and musician, tech founder and philanthropist will.i.am have launched an initiative to bring artificial intelligence and robotics training to students across Africa.

Announced during the Digital@UNGA Anchor Event at the UN General Assembly, the programme combines hands-on AI and robotics training for young people in underserved communities, including in those countries where the joint ITU-UNICEF [United Nations International Children’s Emergency Fund] Giga initiative is working to help governments connect schools to the Internet.

Digital@UNGA, a week-long series of activities during the General Assembly, spotlights global digital cooperation and opportunities to use digital technologies for good.

“This initiative will open new doors of opportunity for AI literacy among young people, enabling them to lead the digital transformation that is reshaping how we live, work and communicate,” said ITU Secretary-General Doreen Bogdan-Martin. “ITU is working to equip youth across Africa with the training and tools they need to thrive in an AI-powered world.”

The new programme addresses the dual challenge of connecting offline populations and building digital skills in communities that have been harder to reach. Special emphasis will be placed on reaching girls and other underrepresented groups.

While demand for AI skills is increasing rapidly, 2.6 billion people remain offline worldwide, including 1.3 billion children. In Africa, 60 per cent of young people are still unconnected, severely limiting opportunities to learn and thrive in the digital economy.

Once schools are connected to the Internet through the Giga initiative, students aged from 10 to 18 years old will gain access to AI training through ITU’s AI Skills Coalition and Robotics for Good Youth Challenge, initiatives of ITU’s AI for Good programme.

Backed by ITU’s AI Skills Coalition Goodwill Ambassador will.i.am, founder and president of the i.am Angel Foundation, the initiative will deliver hands-on robotics kits, localized AI curricula and teacher training to schools participating in the programme.

“In our global tech-driven economy, it’s urgent that we help bring young people in critically underserved areas up to speed so they can participate,” said will.i.am. “With STEM, robotics and AI skills, bright young minds across Africa will be equipped with the skills required to succeed and help solve the world’s most pressing problems.”

Google, through its philanthropic arm Google.org, will contribute AI expertise and funding of USD 1 million to launch the programme.

For many children, this programme will offer the first chance to access the internet, code and experiment with robotics.

“To take full advantage of the opportunities presented by AI, we must democratize access, making it available to everyone, everywhere,” said James Manyika, Senior Vice President of Research, Labs, Technology & Society at Google. “We see this AI and robotics training program as an important part of how we’re delivering on our mission in Africa, where Google is working to expand connectivity, increase access to AI tools, and build skills across the continent.”

The programme will launch in Ghana, Ivory Coast, Kenya, Nigeria, and South Africa to establish the foundation for bringing AI and robotics skills training into schools across the continent.

Activities will include customizing courses, training teachers and facilitators, distributing robotics kits to schools, and hosting national showcases.

The work in the first five countries will build on existing Robotics for Good competitions and Giga partnerships. Robotics for Good is already active in more than 60 countries around the world, while Giga is engaged in 45.

Over time, the initiative will expand to countries across Africa and eventually worldwide.

Resources and background information:

  • Learn more about the AI Skills Coalition here.
  • Learn more about the Robotics for Good Global Youth Challenge here.
  • Learn more about Giga here.
  • Learn more about AI for Good here

About ITU:

The International Telecommunication Union (ITU) is the United Nations agency for digital technologies, driving innovation for people and the planet with 194 Member States and a membership of over 1,000 companies, universities, civil society, and international and regional organizations. Established in 1865, ITU coordinates the global use of the radio spectrum and satellite orbits, establishes international technology standards, drives universal connectivity and digital services, and is helping to make sure everyone benefits from sustainable digital transformation, including the most remote communities. From artificial intelligence (AI) to quantum, from satellites and submarine cables to advanced mobile and wireless broadband networks, ITU is committed to connecting the world and beyond. Learn more: www.itu.int   

Call me cynical but I wonder where the money is coming from and I wonder how Google will profit from this philanthropic endeavour. That said, I hope some good comes of it.

African Engineering and Technology Network (AFRETECH) signs up ninth academic partner

Before getting to the announcement from the African Engineering and Technology Network (AFRETECH), here’s a bit more about the organization from its webspace (About US page) on the University of Nairobi (Kenya) website,

The African Engineering and Technology Network (AFRETEC) is a pan-African collaboration of technology-focused universities from across the African continent. The creation of AFRETEC is a defining moment for the digital transformation of Africa. The network will build a strong knowledge creation and educational infrastructure on the continent. It will also provide a platform for its members to engage in deep collaboration that drives inclusive digital growth in Africa.

AFRETEC will create a platform for technology-focused universities in Africa to drive inclusive digital growth by collaborating on teaching and learning, knowledge creation, and entrepreneurship activities within the area of engineering and technology.

The core of this transformative initiative lies in providing unwavering support to students and academic staff, enabling them to enhance their knowledge and skills in the realm of emerging technologies and other areas needing attention when it comes to the employability of graduates. Academic staff are supported to enhance their teaching skills via training of trainers and workshops.

AFRETEC brings together technology-focused universities in Africa in a collaborative setting to drive inclusive digital growth. The key areas of collaboration include:

Teaching and Learning

Knowledge Creation

Innovation & Entrepreneurship

Industry & Inclusion

Afretec’s pillar of knowledge creation recently announced three research clusters of health, energy and sustainability, and environment. The network’s teaching and learning pillar launched a series of studies on teaching resources and best practices in Africa. Under the entrepreneurship pillar, programs were initiated to build the pipeline of entrepreneurship at partner universities.

This May 28, 2025 College of Engineering, Carnegie Mellon University (Pennsylvania, US) news release (also on EurekAlert) by Hannah Diorio-Toth announces a new partnership,

Carnegie Mellon University Africa announced today that the African Engineering and Technology Network (Afretec) has signed its ninth university partner, Universidade Agostinho Neto. The network, launched in 2022, provides a vehicle for technology-focused universities in Africa to engage in deep collaboration to drive digital growth, create technology development and job growth, and shape policy change.

Afretec Network members span the entire continent and include Carnegie Mellon University Africa (Rwanda), Al Akhawayn University (Morocco), the American University in Cairo (Egypt), Université Cheikh Anta Diop (Senegal), University of Lagos (Nigeria), University of Nairobi (Kenya), University of Rwanda, University of the Witwatersrand (South Africa), and now Universidade Agostinho Neto (Angola).

“We are proud to welcome Agostinho Neto University into the Afretec Network,” said Conrad Tucker, director of CMU-Africa and associate dean for international affairs-Africa. “As a network, we are focused on pan-African digital growth, which means that it is crucial that we collaborate across different languages and cultures on the continent.”

The Afretec Network is focused on goals in three areas:

  • Producing critical, locally relevant innovations and globally competitive technology talent 
  • Developing a digital knowledge creation ecosystem
  • Fostering a startup technology culture and ecosystem across Africa

Located in the capital city of Luanda, Agostinho Neto University is Angola’s oldest and largest public higher education institution. The university has a commitment to modernization, academic excellence, and the sustainable development of Angola and Africa. The Portuguese-speaking country of Angola has a young population and a strong demand for engineering, IT, and technology-driven programs. The university has already begun to collaborate with the network and will join partner universities in engaging with stakeholders across the continent to work toward the shared mission of the digital transformation of Africa.

– – –

About the African Engineering and Technology Network:

The African Engineering and Technology Network (Afretec) is a pan-African network made up of technology-focused universities across the continent, who are working together to drive the digital transformation of Africa. The network is led by Carnegie Mellon University Africa. Learn more by visiting www.afretec.org.

About the College of Engineering and CMU-Africa: 

The College of Engineering at Carnegie Mellon University is a top-ranked engineering college that is known for our Advanced Collaboration culture in research and education. The College is well-known for working on problems of both scientific and practical importance. Our “maker” culture is ingrained in all that we do, leading to novel approaches and transformative results. Our acclaimed faculty have a focus on innovation management and engineering to yield transformative results that will drive the intellectual and economic vitality of our community, nation, and world. 

Carnegie Mellon University Africa was established in 2011 through a partnership between Carnegie Mellon and the Government of Rwanda. CMU-Africa is the only U.S. research university offering its master’s degrees with a full-time faculty, staff, and operations in Africa. The institution is addressing the critical shortage of high-quality engineering talent required to accelerate the economic transformation of the African continent. For more information on the College of Engineering location in Africa, visit www.africa.engineering.cmu.edu.

Given the Trump administration’s (US) antipathy toward international aid and education (of all kinds and at many levels), this announcement comes at an ‘interesting’ time.

October 2019 science and art/science events in Vancouver and other parts of Canada

This is a scattering of events, which I’m sure will be augmented as we properly start the month of October 2019.

October 2, 2019 in Waterloo, Canada (Perimeter Institute)

If you want to be close enough to press the sacred flesh (Sir Martin Rees), you’re out of luck. However, there are still options ranging from watching a live webcast from the comfort of your home to watching the lecture via closed circuit television with other devoted fans at a licensed bistro located on site at the Perimeter Institute (PI) to catching the lecture at a later date via YouTube.

That said, here’s why you might be interested,

Here’s more from a September 11, 2019 Perimeter Institute (PI) announcement received via email,

Surviving the Century
MOVING TOWARD A POST-HUMAN FUTURE
Martin Rees, UK Astronomer Royal
Wednesday, Oct. 2 at 7:00 PM ET

Advances in technology and space exploration could, if applied wisely, allow a bright future for the 10 billion people living on earth by the end of the century.

But there are dystopian risks we ignore at our peril: our collective “footprint” on our home planet, as well as the creation and use of technologies so powerful that even small groups could cause a global catastrophe.

Martin Rees, the UK Astronomer Royal, will explore this unprecedented moment in human history during his lecture on October 2, 2019. A former president of the Royal Society and master of Trinity College, Cambridge, Rees is a cosmologist whose work also explores the interfaces between science, ethics, and politics. Read More.

Mark your calendar! Tickets will be available on Monday, Sept. 16 at 9 AM ET

Didn’t get tickets for the lecture? We’ve got more ways to watch.
Join us at Perimeter on lecture night to watch live in the Black Hole Bistro.
Catch the live stream on Inside the Perimeter or watch it on Youtube the next day
Become a member of our donor thank you program! Learn more.

It took me a while to locate an address for PI venue since I expect that information to be part of the announcement. (insert cranky emoticon here) Here’s the address: Perimeter Institute, Mike Lazaridis Theatre of Ideas, 31 Caroline St. N., Waterloo, ON

Before moving onto the next event, I’m including a paragraph from the event description that was not included in the announcement (from the PI Outreach Surviving the Century webpage),

In his October 2 [2019] talk – which kicks off the 2019/20 season of the Perimeter Institute Public Lecture Series – Rees will discuss the outlook for humans (or their robotic envoys) venturing to other planets. Humans, Rees argues, will be ill-adapted to new habitats beyond Earth, and will use genetic and cyborg technology to transform into a “post-human” species.

I first covered Sir Martin Rees and his concerns about technology (robots and cyborgs run amok) in this November 26, 2012 posting about existential risk. He and his colleagues at Cambridge University, UK, proposed a Centre for the Study of Existential Risk, which opened in 2015.

Straddling Sept. and Oct. at the movies in Vancouver

The Vancouver International Film Festival (VIFF) opened today, September 26, 2019. During its run to October 11, 2019 there’ll be a number of documentaries that touch on science. Here are three of the documentaries most closely adhere to the topics I’m most likely to address on this blog. There is a fourth documentary included here as it touches on ecology in a more hopeful fashion than is the current trend.

Human Nature

From the VIFF 2019 film description and ticket page,

One of the most significant scientific breakthroughs in history, the discovery of CRISPR has made it possible to manipulate human DNA, paving the path to a future of great possibilities.

The implications of this could mean the eradication of disease or, more controversially, the possibility of genetically pre-programmed children.

Breaking away from scientific jargon, Human Nature pieces together a complex account of bio-research for the layperson as compelling as a work of science-fiction. But whether the gene-editing powers of CRISPR (described as “a word processor for DNA”) are used for good or evil, they’re reshaping the world as we know it. As we push past the boundaries of what it means to be human, Adam Bolt’s stunning work of science journalism reaches out to scientists, engineers, and people whose lives could benefit from CRISPR technology, and offers a wide-ranging look at the pros and cons of designing our futures.

Tickets
Friday, September 27, 2019 at 11:45 AM
Vancity Theatre

Saturday, September 28, 2019 at 11:15 AM
International Village 10

Thursday, October 10, 2019 at 6:45 PM
SFU Goldcorp

According to VIFF, the tickets for the Sept. 27, 2019 show are going fast.

Resistance Fighters

From the VIFF 2019 film description and ticket page,

Since mass-production in the 1940s, antibiotics have been nothing less than miraculous, saving countless lives and revolutionizing modern medicine. It’s virtually impossible to imagine hospitals or healthcare without them. But after years of abuse and mismanagement by the medical and agricultural communities, superbugs resistant to antibiotics are reaching apocalyptic proportions. The ongoing rise in multi-resistant bacteria – unvanquishable microbes, currently responsible for 700,000 deaths per year and projected to kill 10 million yearly by 2050 if nothing changes – and the people who fight them are the subjects of Michael Wech’s stunning “science-thriller.”

Peeling back the carefully constructed veneer of the medical corporate establishment’s greed and complacency to reveal the world on the cusp of a potential crisis, Resistance Fighters sounds a clarion call of urgency. It’s an all-out war, one which most of us never knew we were fighting, to avoid “Pharmageddon.” Doctors, researchers, patients, and diplomats testify about shortsighted medical and economic practices, while Wech offers refreshingly original perspectives on environment, ecology, and (animal) life in general. As alarming as it is informative, this is a wake-up call the world needs to hear.

Sunday, October 6, 2019 at 5:45 PM
International Village 8

Thursday, October 10, 2019 at 2:15 PM
SFU Goldcorp

According to VIFF, the tickets for the Oct. 6, 2019 show are going fast.

Trust Machine: The Story of Blockchain

Strictly speaking this is more of a technology story than science story but I have written about blockchain and cryptocurrencies before so I’m including this. From the VIFF 2019 film description and ticket page,

For anyone who has questions about cryptocurrencies like Bitcoin (and who doesn’t?), Alex Winter’s thorough documentary is an excellent introduction to the blockchain phenomenon. Trust Machine offers a wide range of expert testimony and a variety of perspectives that explicate the promises and the risks inherent in this new manifestation of high-tech wizardry. And it’s not just money that blockchains threaten to disrupt: innovators as diverse as UNICEF and Imogen Heap make spirited arguments that the industries of energy, music, humanitarianism, and more are headed for revolutionary change.

A propulsive and subversive overview of this little-understood phenomenon, Trust Machine crafts a powerful and accessible case that a technologically decentralized economy is more than just a fad. As the aforementioned experts – tech wizards, underground activists, and even some establishment figures – argue persuasively for an embrace of the possibilities offered by blockchains, others criticize its bubble-like markets and inefficiencies. Either way, Winter’s film suggests a whole new epoch may be just around the corner, whether the powers that be like it or not.

Tuesday, October 1, 2019 at 11:00 AM
Vancity Theatre

Thursday, October 3, 2019 at 9:00 PM
Vancity Theatre

Monday, October 7, 2019 at 1:15 PM
International Village 8

According to VIFF, tickets for all three shows are going fast

The Great Green Wall

For a little bit of hope, From the VIFF 2019 film description and ticket page,

“We must dare to invent the future.” In 2007, the African Union officially began a massively ambitious environmental project planned since the 1970s. Stretching through 11 countries and 8,000 km across the desertified Sahel region, on the southern edges of the Sahara, The Great Green Wall – once completed, a mosaic of restored, fertile land – would be the largest living structure on Earth.

Malian musician-activist Inna Modja embarks on an expedition through Senegal, Mali, Nigeria, Niger, and Ethiopia, gathering an ensemble of musicians and artists to celebrate the pan-African dream of realizing The Great Green Wall. Her journey is accompanied by a dazzling array of musical diversity, celebrating local cultures and traditions as they come together into a community to stand against the challenges of desertification, drought, migration, and violent conflict.

An unforgettable, beautiful exploration of a modern marvel of ecological restoration, and so much more than a passive source of information, The Great Green Wall is a powerful call to take action and help reshape the world.

Sunday, September 29, 2019 at 11:15 AM
International Village 10

Wednesday, October 2, 2019 at 6:00 PM
International Village 8
Standby – advance tickets are sold out but a limited number are likely to be released at the door

Wednesday, October 9, 2019 at 11:00 AM
International Village 9

As you can see, one show is already offering standby tickets only and the other two are selling quickly.

For venue locations, information about what ‘standby’ means and much more go here and click on the Festival tab. As for more information the individual films, you’ll links to trailers, running times, and more on the pages for which I’ve supplied links.

Brain Talks on October 16, 2019 in Vancouver

From time to time I get notices about a series titled Brain Talks from the Dept. of Psychiatry at the University of British Columbia. A September 11, 2019 announcement (received via email) focuses attention on the ‘guts of the matter’,

YOU ARE INVITED TO ATTEND:

BRAINTALKS: THE BRAIN AND THE GUT

WEDNESDAY, OCTOBER 16TH, 2019 FROM 6:00 PM – 8:00 PM

Join us on Wednesday October 16th [2019] for a series of talks exploring the
relationship between the brain, microbes, mental health, diet and the
gut. We are honored to host three phenomenal presenters for the evening:
Dr. Brett Finlay, Dr. Leslie Wicholas, and Thara Vayali, ND.

DR. BRETT FINLAY [2] is a Professor in the Michael Smith Laboratories at
the University of British Columbia. Dr. Finlay’s  research interests are
focused on host-microbe interactions at the molecular level,
specializing in Cellular Microbiology. He has published over 500 papers
and has been inducted into the Canadian  Medical Hall of Fame. He is the
co-author of the  books: Let Them Eat Dirt and The Whole Body
Microbiome.

DR. LESLIE WICHOLAS [3]  is a psychiatrist with an expertise in the
clinical understanding of the gut-brain axis. She has become
increasingly involved in the emerging field of Nutritional Psychiatry,
exploring connections between diet, nutrition, and mental health.
Currently, Dr. Wicholas is the director of the Food as Medicine program
at the Mood Disorder Association of BC.

THARA VAYALI, ND [4] holds a BSc in Nutritional Sciences and a MA in
Education and Communications. She has trained in naturopathic medicine
and advocates for awareness about women’s physiology and body literacy.
Ms. Vayali is a frequent speaker and columnist that prioritizes
engagement, understanding, and community as pivotal pillars for change.

Our event on Wednesday, October 16th [2019] will start with presentations from
each of the three speakers, and end with a panel discussion inspired by
audience questions. After the talks, at 7:30 pm, we host a social
gathering with a rich spread of catered healthy food and non-alcoholic
drinks. We look forward to seeing you there!

Paetzhold Theater

Vancouver General Hospital; Jim Pattison Pavilion, Vancouver, BC

Attend Event

That’s it for now.

3-D underwater acoustic carpet cloak

Who can resist a ‘Black Panther’ reference (Wikipedia Black Panther film entry)? Certainly not me. Scientists from the Chinese Academy of Sciences made this June 4, 2018 announcement (also on EurekAlert),

Cloaking is one of the most eye-catching technologies in sci-fi movies. In two 2018 Marvel films, Black Panther and Avengers: Infinity War, Black Panther conceals his country Wakanda, a technologically advanced African nation, from the outside world using the metal vibranium.

However, in the real world, if you want to hide something, you need to deceive not only the eyes, but also the ears, especially in the underwater environment.

Recently, a research team led by Prof. YANG Jun from the Institute of Acoustics (IOA) of the Chinese Academy of Sciences designed and fabricated a 3D underwater acoustic carpet cloak (UACC) using transformation acoustics.

The research was published online in Applied Physics Letters on June 1 [2018].

Like a shield, the carpet cloak is a material shell that can reflect waves as if the waves were reflecting off a planar surface. Hence, the cloaked target becomes undetectable to underwater detection instruments like sonar.

Using transformation acoustics, the research team first finished the 2D underwater acoustic carpet cloak with metamaterial last year (Scientific Reports, April 6, 2017). However, this structure works only in two dimensions, and becomes immediately detectable when a third dimension is introduced.

To solve this problem, YANG Jun and his IOA team combined transformation acoustics with a reasonable scaling factor, worked out the parameters, and redesigned the unit cell of the 2D cloak. They designed the 3D underwater acoustic carpet cloak and then proposed a fabrication and assembly method to manufacture it. The 3D cloak can hide an object from top to bottom and deal with complex situations, such as acoustic detection in all directions.

The 3D underwater acoustic carpet cloak is a pyramid comprising eight triangular pyramids; each triangular pyramid is composed of 92 steel strips using a rectangle lattice, similar to a wafer biscuit. More vividly, if we remove the core from a big solid pyramid, we can hide something safely in the hollow space left.

“To make a 3D underwater acoustic carpet cloak, researchers needed to construct the structure with 2D period, survey the influence of the unit cell’s resonance, examine the camouflage effect at the ridge of the sample, and other problems. In addition, the fabrication and assembly of the 3D device required more elaborate design. The extension of the UACC from 2D to 3D represents important progress in applied physics,” said YANG.

In experimental tests, a short Gaussian pulse propagated towards the target covered with the carpet cloak, and the waves backscattered toward their origin. The cloaked object successfully mimicked the reflecting surface and was undetectable by sound detection. Meanwhile, the measured acoustic pressure fields from the vertical view demonstrated the effectiveness of the designed 3D structure in every direction.

“As the next step, we will try to make the 3D underwater acoustic carpet cloak smaller and lighter,” said YANG.

Funding for this research came from the National Natural Science Foundation of China (Grant No.11304351, 1177021304), the Youth Innovation Promotion Association of CAS (Grant No. 2017029), and the IACAS Young Elite Researcher Project (Grant No. QNYC201719).

Prof. YANG Jun and Dr. JIA Han led the research team from the Institute of Acoustics (IOA) of the Chinese Academy of Sciences. Prof. YANG Jun engages in research on sound, vibration and signal processing, and especially sound field control and array signal processing. They also work on other devices based on metamaterial in order to manipulate the propagation of sound waves.

A model of the device,

Caption: This is a model and photograph of the 3D underwater acoustic carpet cloak composed of over 700 steel strips. Credit: IOA

Here’s a link to and a citation for the paper,

Experimental demonstration of three-dimensional broadband underwater acoustic carpet cloak by Yafeng Bi, Han Jia, Zhaoyong Sun, Yuzhen Yang, Han Zhao, and Jun Yang.
Appl. Phys. Lett. 112, 223502 (2018); https://doi.org/10.1063/1.5026199 Published Online: June 2018

This paper is open access.

Genetic engineering: an eggplant in Bangladesh and a synthetic biology grant at Concordia University (Canada)

I have two bits of genetic engineering news.

Eggplants in Bangladesh

I always marvel at their beauty,

Bt eggplant is the first genetically engineered food crop to be successfully introduced in South Asia. The crop is helping some of the world’s poorest farmers feed their families and communities while reducing the use of pesticides. Photo by Cornell Alliance for Science.

A July 17, 2018 news item on phys.org describes a genetic engineering application,

Ansar Ali earned just 11,000 taka – about $130 U.S. dollars – from eggplant he grew last year in Bangladesh. This year, after planting Bt eggplant, he brought home more than double that amount, 27,000 taka. It’s a life-changing improvement for a subsistence farmer like Ali.

Bt eggplant, or brinjal as it’s known in Bangladesh, is the first genetically engineered food crop to be successfully introduced in South Asia. Bt brinjal is helping some of the world’s poorest farmers to feed their families and communities, improve profits and dramatically reduce pesticide use. That’s according to Tony Shelton, Cornell professor of entomology and director of the Bt brinjal project funded by the United States Agency for International Development (USAID). Shelton and Jahangir Hossain, the country coordinator for the project in Bangladesh, lead the Cornell initiative to get these seeds into the hands of the small-scale, resource-poor farmers who grow a crop consumed daily by millions of Bangladeshis.

A July 11, 2018 Cornell University news release by Krisy Gashler, which originated the news item, expands on the theme (Note: Links have been removed),

Bt brinjal was first developed by the Indian seed company Mahyco in the early 2000s. Scientists inserted a gene from the bacterium Bacillus thuringiensis (thus the name, Bt) into nine brinjal varieties. The plants were engineered to resist the fruit and shoot borer, a devastating insect whose larvae bore into the stem and fruit of an eggplant. The insects cause up to 80 percent crop loss.

The Bt protein produced by the engineered eggplant causes the fruit and shoot borer larva to stop feeding, but is safe for humans consuming the eggplant, as proven through years of biosafety trials. In fact, Bt is commonly used by organic farmers to control caterpillars but has to be sprayed frequently to be effective. The Bt eggplant produces essentially the same protein as in the spray. More than 80 percent of field corn and cotton grown in the U.S. contains a Bt gene for insect control.

“Farmers growing Bt brinjal in Bangladesh are seeing three times the production of other brinjal varieties, at half the production cost, and are getting better prices at the market,” Hossain said.

A recent survey found 50 percent of farmers in Bangladesh said that they experienced illness due to the intense spraying of insecticides. Most farmers work in bare feet and without eye protection, leading to pesticide exposure that causes skin and eye irritation, and vomiting.

“It’s terrible for these farmers’ health and the health of the environment to spray so much,” said Shelton, who found that pesticide use on Bt eggplant was reduced as much as 92 percent in commercial Bt brinjal plantings. “Bt brinjal is a solution that’s really making a difference in people’s lives.”

Alhaz Uddin, a farmer in the Tangail district, made 6,000 taka growing traditional brinjal, but had to spend 4,000 taka on pesticides to combat fruit and shoot borer.

“I sprayed pesticides several times in a week,” he said. “I got sick many times during the spray.”

Mahyco initially wanted to introduce Bt brinjal in India and underwent years of successful safety testing. But in 2010, due to pressure from anti-biotechnology groups, the Indian minister of the environment placed a moratorium on the seeds. It is still in effect today, leaving brinjal farmers there without the effective and safe method of control available to their neighbors in Bangladesh.

Even before the Indian moratorium, Cornell scientists hosted delegations from Bangladesh that wanted to learn about Bt brinjal and the Agricultural Biotechnology Support Project II (ABSP II), a consortium of public and private institutions in Asia and Africa intended to help with the commercial development, regulatory approval and dissemination of bio-engineered crops, including Bt brinjal.

Cornell worked with USAID, Mahyco and the Bangladesh Agricultural Research Institute to secure regulatory approval, and in 2014 the Bangladeshi government distributed a small number of Bt brinjal plants to 20 farmers in four districts. The next year 108 farmers grew Bt brinjal, and the following year the number of farmers more than doubled to 250. In 2017 the number increased to 6,512 and in 2018 to 27,012. The numbers are likely even higher, according to Shelton, as there are no constraints against farmers saving seeds and replanting.

“Farmers who plant Bt brinjal are required to plant a small perimeter of traditional brinjal around the Bt variety; research has shown that the insects will infest plants in the buffer area, and this will slow their evolutionary development of resistance to the Bt plants,” Shelton said.

In a March 2017 workshop, Bangladeshi Agriculture Minister Begum Matia Chowdhury called Bt brinjal “a success story of local and foreign collaboration.”

“We will be guided by the science-based information, not by the nonscientific whispering of a section of people,” Chowdhury said. “As human beings, it is our moral obligation that all people in our country should get food and not go to bed on an empty stomach. Biotechnology can play an important role in this effect.”

Here’s what an infested eggplant looks like,

Non-Bt eggplant infested with fruit and shoot borer. Photo by Cornell Alliance for Science

It looks more like a fig than an eggplant.

This is part of a more comprehensive project as revealed in a March 29, 2016 Cornell University news release issued on the occasion of a $4.8M, three-year grant from the U.S. Agency for International Development (USAID),

… The award supports USAID’s work under Feed the Future, the U.S. government’s global initiative to fight hunger and improve food security using agricultural science and technology.

In the Feed the Future South Asia Eggplant Improvement Partnership, Cornell will protect eggplant farmers from yield losses and improve their livelihoods in partnership with the Bangladesh Agricultural Research Institute (BARI) and the University of the Philippines at Los Baños. Eggplant, or brinjal, is a staple crop that is an important source of income and nutrition for farmers and consumers in South Asia.

Over the past decade, Cornell has led the Agricultural Biotechnology Support Project II (ABSPII), also funded by USAID, that prompted a consortium of institutions in Asia and Africa to use the tools of modern biotechnology, particularly genetic engineering, to improve crops to address major production constraints for which conventional plant breeding tools have not been effective.

In October 2013, Bangladesh became the first country in South Asia to approve commercial cultivation of a genetically engineered food crop. In February 2014, Matia Chowdhury, the Bangladesh minister of agriculture, released four varieties of Bt brinjal to 20 farmers. With the establishment of the 20 Bt brinjal demonstration plots in 2014 and 104 more in 2015, BARI reported a noticeable decrease in fruit and shoot borer infestation, increased yields, decreased use of pesticide and improved income for farmers.

The Feed the Future South Asia Eggplant Improvement Partnership addresses and integrates all elements of the commercialization process — including technology development, regulation, marketing, seed distribution, and product stewardship. It also provides strong platforms for policy development, capacity building, gender equality, outreach and communication.

Moving on from practical applications …

Canada’s synthetic biology training centre

It seems Concordia University (Montréa) is a major Canadian centre for all things ‘synthetic biological’. (from the History and Vision webpage on Concordia University’s Centre for Applied Synthetic Biology webspace),

History and vision

Emerging in 2012 from a collaboration between the Biology and Electrical and Computer Engineering Departments, the Centre received University-wide status in 2016 growing its membership to include Biochemistry, Journalism, Communication Studies, Mechanical, Industrial and Chemical Engineering.


Timeline

T17-36393-VPRG-Timeline-graphic-promo-v4

You can see the timeline does not yet include 2018 development(s). Also it started as “a collaboration between the Biology and Electrical and Computer Engineering Departments?” This suggests a vastly different approach to genetic engineering that that employed in the “eggplant” research. From a July 16, 2018 posting on the Genome Alberta blog,

The Natural Sciences and Engineering Research Council of Canada (NSERC) has committed $1.65 million dollars over six years to establish a research and training program at Concordia’s Centre for Applied Synthetic Biology.

The funds were awarded after Malcolm Whiteway (…), professor of biology and the Canada Research Chair in Microbial Genomics, and the grant application team submitted a proposal to NSERC’s Collaborative Research and Training Experience (CREATE) program.

The Synthetic Biology Applications CREATE program — or SynBioApps — will help students acquire and develop important professional skills that complement their academic education and improve their job-readiness.

‘Concordia is a natural fit’

“As the Canadian leader in synthetic biology and as the home of the country’s only genome foundry, Concordia is a natural fit for a training program in this growing area of research,” says Christophe Guy, vice-president of Research and Graduate Studies.

“In offering a program like SynBioApps, we are providing our students with both a fundamental education in science and the business skills they’ll need to transition into their professional careers.”

The program’s aims are twofold: First, it will teach students how to design and construct cells and proteins for the development of new products related to human health, green technologies, and fundamental biological investigations. Second, it will provide cross-disciplinary training and internship opportunities through the university’s District 3 Innovation Center.

SynBioApps will be open to students from biology, biochemistry, engineering, computing, and mathematics.

“The ability to apply engineering approaches to biological systems promises to revolutionize both biology and industry,” says Whiteway, who is also a member of the Centre for Applied Synthetic Biology.

“The SynBioApps program at Concordia will provide a training program to develop the students who will both investigate the biology and build these industries.”

You can find out more about Concordia’s Centre for Applied Synthetic Biology here (there are jobs listed on their home page) and you can find information about the Synthetic Biology Applications (SynBioApps) training programme here.

After the April 22, 2017 US March for Science

Since last Saturday’s (April 22, 2017) US March for Science, I’ve stumbled across three interesting perspectives on the ‘movement’. As I noted in my April 14, 2017 posting, the ‘march’ has reached out beyond US borders to become international in scope. (On the day, at least 18 marches were held in Canada alone.)

Canada

John Dupuis wrote about his experience as a featured speaker at the Toronto (Ontario) march in an April 24, 2017 posting on his Confessions of a Science Librarian blog (Note: Links have been removed),

My fellow presenters were Master of Ceremonies Rupinder Brar and speakers Dawn Martin-Hill, Josh Matlow, Tanya Harrison, Chelsea Rochman, Aadita Chaudhury, Eden Hennessey and Cody Looking Horse.

Here’s what I had to say:

Hi, my name is John and I’m a librarian. My librarian superpower is making lists, checking them twice and seeing who’s been naughty and who’s been nice. The nice ones are all of you out here marching for science. And the naughty ones are the ones out there that are attacking science and the environment.

Now I’ve been in the list-making business for quite a few years, making an awful lot of lists of how governments have attacked or ignored science. I did a lot of work making lists about the Harper government and their war on science. The nicest thing I’ve ever seen written about my strange little obsession was in The Guardian.

Here’s what they said, in an article titled, How science helped to swing the Canadian election.

“Things got so bad that scientists and their supporters took to the streets. They demonstrated in Ottawa. They formed an organization, Evidence for Democracy, to bring push back on political interference in science. Awareness-raising forums were held at campuses throughout Canada. And the onslaught on science was painstakingly documented, which tends to happen when you go after librarians.”

Yeah, watch out. Don’t go after libraries and librarians. The Harper govt learned its lesson. And we learned a lesson too. And that lesson was that keeping track of things, that painstakingly documenting all the apparently disconnected little bits and pieces of policies here, regulations changed there and a budget snipped somewhere else, it all adds up.

What before had seemed random and disconnected is suddenly a coherent story. All the dots are connected and everybody can see what’s happened. By telling the whole story, by laying it all out there for everyone to see, it’s suddenly easier for all of us to point to the list and to hold the government of the day accountable. That’s the lesson learned from making lists.

But back in 2013 what I saw the government doing wasn’t the run of the mill anti-science that we’d seen before. Prime Minister Harper’s long standing stated desire to make Canada a global energy superpower revealed the underlying motivation but it was the endless litany of program cuts, census cancellation, science library closures, regulatory changes and muzzling of government scientists that made up the action plan. But was it really a concerted action plan or was it a disconnected series of small changes that were really no big deal or just a little different from normal?

That’s where making lists comes in handy. If you’re keeping track, then, yeah, you see the plan. You see the mission, you see the goals, you see the strategy, you see the tactics. You see that the government was trying to be sneaky and stealthy and incremental and “normal” but that there was a revolution in the making. An anti-science revolution.

Fast forward to now, April 2017, and what do we see? The same game plan repeated, the same anti-science revolution under way [in the US]. Only this time not so stealthy. Instead of a steady drip, it’s a fire hose. Message control at the National Parks Service, climate change denial, slashing budgets and shutting down programs at the EPA and other vital agencies. Incompetent agency directors that don’t understand the mission of their agencies or who even want to destroy them completely.

Once again, we are called to document, document, document. Tell the stories, mobilize science supporters and hold the governments accountable at the ballot box. Hey, like the Guardian said, if we did it in Canada, maybe that game plan can be repeated too.

I invited my three government reps here to the march today, Rob Oliphant, Josh Matlow and Eric Hoskins and I invited them to march with me so we could talk about how evidence should inform public policy. Josh, of course, is up here on the podium with me. As for Rob Oliphant from the Federal Liberals and Eric Hoskins from the Ontario Liberals, well, let’s just say they never answered my tweets.

Keep track, tell the story, hold all of them from every party accountable. The lesson we learned here in Canada was that science can be a decisive issue. Real facts can mobilise people to vote against alternative facts.

Thank you.

I’m not as sure as Dupuis that science was a decisive issue in our 2015 federal election; I’d say it was a factor. More importantly, I think the 2015 election showed Canadian scientists and those who feel science is important that it is possible to give it a voice and more prominence in the political discourse.

Rwanda

Eric Leeuwerck in an April 24, 2017 posting on one of the Agence Science-Press blogs describes his participation from Rwanda (I have provided a very rough translation after),

Un peu partout dans le monde, samedi 22 avril 2017, des milliers de personnes se sont mobilisées pour la « march for science », #sciencemarch, « une marche citoyenne pour les sciences, contre l’obscurantisme ». Et chez moi, au Rwanda ?

J’aurais bien voulu y aller moi à une « march for science », j’aurais bien voulu me joindre aux autres voix, me réconforter dans un esprit de franche camaraderie, à marcher comme un seul homme dans les rues, à dire que oui, nous sommes là ! La science vaincra, « No science, no futur ! » En Arctique, en Antarctique, en Amérique latine, en Asie, en Europe, sur la terre, sous l’eau…. Partout, des centaines de milliers de personnes ont marché ensemble. L’Afrique s’est mobilisée aussi, il y a eu des “march for science” au Kenya, Nigeria, Ouganda…

Et au Rwanda ? Eh bien, rien… Pourquoi suivre la masse, hein ? Pourquoi est-ce que je ne me suis pas bougé le cul pour faire une « march for science » au Rwanda ? Euh… et bien… Je vous avoue que je me vois mal organiser une manif au Rwanda en fait… Une collègue m’a même suggéré l’idée mais voilà, j’ai laissé tomber au moment même où l’idée m’a traversé l’esprit… Cependant, j’avais quand même cette envie d’exprimer ma sympathie et mon appartenance à ce mouvement mondial, à titre personnel, sans vouloir parler pour les autres, avec un GIF tout simple.

March for science RWanda

” March for science ” Rwanda

Je dois dire que je me sens bien souvent seul ici… Les cours de biologie de beaucoup d’écoles sont créationnistes, même au KICS (pour Kigali International Community School), une école internationale américaine (je tiens ça d’amis qui ont eu leurs enfants dans cette école). Sur son site, cette école de grande renommée ici ne cache pas ses penchants chrétiens : “KICS is a fully accredited member of the Association of Christian Schools International (ACSI) (…)” et, de plus, est reconnue par le ministère de l’éducation rwandais : “(KICS) is endorsed by the Rwandan Ministry of Education as a sound educational institution“. Et puis, il y a cette phrase sur leur page d’accueil : « Join the KICS family and impact the world for christ ».

Je réalise régulièrement des formations en pédagogie des sciences pour des profs locaux du primaire et du secondaire. Lors de ma formation sur la théorie de l’Evolution, qui a eu pas mal de succès, les enseignants de biologie m’ont confié que c’était la première fois, avec moi, qu’ils avaient eu de vrais cours sur la théorie de l’Evolution… (Je passe les débats sur l’athéisme, sur la « création » qui n’est pas un fait, sur ce qu’est un fait, qu’il ne faut pas faire « acte de foi » pour faire de la science et que donc on ne peut pas « croire » en la science, mais la comprendre…). Un thème délicat à aborder a été celui de la « construction des identités meurtrières » pour reprendre le titre du livre d’Amin Maalouf, au Rwanda comment est-ce qu’une pseudoscience, subjective, orientée politiquement et religieusement a pu mener au racisme et au génocide. On m’avait aussi formellement interdit d’en parler à l’époque, ma directrice de l’époque disait « ne te mêle pas de ça, ce n’est pas notre histoire », mais voilà, maintenant, ce thème est devenu un thème incontournable, même à l’Ecole Belge de Kigali !

Une autre formation sur l’éducation sexuelle a été très bien reçue aussi ! J’ai mis en place cette formation, aussi contre l’avis de ma directrice de l’époque (une autre) : des thèmes comme le planning familial, la contraception, l’homosexualité, gérer un débat houleux, les hormones… ont été abordées ! Première fois aussi, m’ont confié les enseignants, qu’ils ont reçu une formation objective sur ces sujets tabous.

Chaque année, je réunis un peu d’argent avec l’aide de l’École Belge de Kigali pour faire ces formations (même si mes directions ne sont pas toujours d’accord avec les thèmes ), je suis totalement indépendant et à part l’École Belge de Kigali, aucune autre institution dont j’ai sollicité le soutien n’a voulu me répondre. Mais je continue, ça relève parfois du militantisme, je l’avoue.

C’est comme mon blog, un des seuls blogs francophones de sciences en Afrique (en fait, je n’en ai jamais trouvé aucun en cherchant sur le net) dans un pays à la connexion Internet catastrophique, je me demande parfois pourquoi je continue… Je perds tellement de temps à attendre que mes pages chargent, à me reconnecter je ne sais pas combien de fois toutes les 5 minutes … En particulier lors de la saison des pluies ! Heureusement que je peux compter sur le soutien inconditionnel de mes communautés de blogueurs : le café des sciences , les Mondoblogueurs de RFI , l’Agence Science-Presse. Sans eux, j’aurais arrêté depuis longtemps ! Six ans de blogging scientifique quand même…

Alors, ce n’est pas que virtuel, vous savez ! Chaque jour, quand je vais au boulot pour donner mes cours de bio et chimie, quand j’organise mes formations, quand j’arrive à me connecter à mon blog, je « marche pour la science ».

Yeah. (De la route, de la science et du rock’n’roll : Rock’n’Science !)

(Un commentaire de soutien ça fait toujours plaisir !)

As I noted, this will be a very rough translation and anything in square brackets [] means that I’m even less sure about the translation in that bit,

Pretty much around the world, thousands will march for science against anti-knowledge/anti-science.

I would have liked to join in and to march with other kindred spirits as one in the streets. We are here! Science will triumph! No science .No future. In the Arctic, in the Antarctic, in Latin America, in Asia, in Europe,  on land, on water … Everywhere hundreds of thousands of people are marching together. Africa, too, has mobilized with marches in Kenya, Nigeria, Uganda ..

And in Rwanda? Well, no, nothing. Why follow everyone else? Why didn’t I get my butt in gear and organize a march? [I’m not good at organizing these kinds of things] A colleague even suggested I arrange something . I had an impulse to do it and then it left. Still, I want to express my solidarity with the March for Science without attempting to talk for or represent anyone other than myself. So, here’s a simple gif,

I have to say I often feel myself to be alone here. The biology courses taught in many of the schools here are creationist biology even at the KICS (Kigali International Community School), an international American school (I have friends whose children attend the school). On the school’s site there’s a sign that does nothing to hide its mission: “KICS is a fully accredited member of the Association of Christian Schools International (ACSI) (…)” and, further, it is recognized as such by the Rwandan Ministry of Education : “(KICS) is endorsed by the Rwandan Ministry of Education as a sound educational institution”. Finally, there’s this on their welcome page : « Join the KICS family and impact the world for christ ».

I regularly give science education prgorammes for local primary and secondary teachers. With regard to my teaching on the theory of evolution some have confided that this is the first time they’ve truly been exposed to a theory of evolution.  (I avoid the debates about atheism and the creation story. Science is not about faith it’s about understanding …). One theme that must be skirted with some delicacy in Rwanda is the notion of constructing a murderous/violent identity to borrow from Amin Maalouf’s book title, ‘Les Identités meurtrières’; in English: In the Name of Identity: Violence and the Need to Belong) as it has elements of a pseudoscience, subjectivity, political and religious connotations and has been used to justify racism and genocide. [Not sure here if he’s saying that the theory of evolution has been appropriated and juxtaposed with notions of violence and identify leading to racism and genocide. For anyone not familiar with the Rwandan genocide of 1994, see this Wikipedia entry.] Ihave been formally forbidden to discuss this period and my director said “Don’t meddle in this. It’s not our history.” But this theme/history has become essential/unavoidable even at the l’Ecole Belge de Kigali (Belgian School of Kigali).

A programme on sex education was well received and that subject too was forbidden to me (by a different director). I included topics such as  family planning, contraception, homosexuality, hormones and inspired a spirited debate. Many times my students have confided that they received good factual information on these taboo topics.

Each year with help from the Belgian School at Kigali, I raise money for these programmes (even if my directors don’t approve of the topics). I’m totally independent and other than the Belgian School at Kigali no other institution that I’ve appraoched has responded. But I continue as I hope that it can help lower milittancy.

My blog is one of the few French language science blogs in Africa (I rarely find any other such blogs when I search). In a country where the internet connection is catastrophically poor, I ask myself why I go on. I lose a lot of time waiting for pages to load or to re-establish a connection, especially in the rainy season. Happily I can depend on the communities of bloggers such as: café des sciences , les Mondoblogueurs de RFI , l’Agence Science-Presse. Without them I would have stopped long ago. It has been six years of blogging science …

It is virtual, you know. Each day when I deliver my courses in biology and chemistry, when I organize my programmes, when I post on my blog, ‘I march for science’.

Comments are gladly accepted. [http://www.sciencepresse.qc.ca/blogue/2017/04/24/march-science-rwanda]

All mistakes are mine.

US

My last bit is from an April 24, 2017 article by Jeremy Samuel Faust for Slate.com, (Note: Links have been removed),

Hundreds of thousands of self-professed science supporters turned out to over 600 iterations of the March for Science around the world this weekend. Thanks to the app Periscope, I attended half a dozen of them from the comfort of my apartment, thereby assiduously minimizing my carbon footprint.

Mainly, these marches appeared to be a pleasant excuse for liberals to write some really bad (and, OK, some truly superb) puns, and put them on cardboard signs. There were also some nicely stated slogans that roused support for important concepts such as reason and data and many that decried the defunding of scientific research and ignorance-driven policy.

But here’s the problem: Little of what I observed dissuades me from my baseline belief that, even among the sanctimonious elite who want to own science (and pwn [sic] anyone who questions it), most people have no idea how science actually works. The scientific method itself is already under constant attack from within the scientific community itself and is ceaselessly undermined by its so-called supporters, including during marches like those on Saturday. [April 22, 2017] In the long run, such demonstrations will do little to resolve the myriad problems science faces and instead could continue to undermine our efforts to use science accurately and productively.

Indeed much of the sentiment of the March for Science seemed to fall firmly in the camp of people espousing a gee-whiz attitude in which science is just great and beyond reproach. They feel that way because, so often, the science they’re exposed to feels that way—it’s cherry-picked. Cherry-picking scientific findings that support an already cherished and firmly held belief (while often ignoring equally if not more compelling data that contradicts it) is epidemic—in scientific journals and in the media.

Let’s face it: People like science when it supports their views. I see this every day. When patients ask me for antibiotics to treat their common colds, I tell them that decades of science and research, let alone a basic understanding of microbiology, shows that antibiotics don’t work for cold viruses. Trust me, people don’t care. They have gotten antibiotics for their colds in the past, and, lo, they got better. (The human immune system, while a bit slower and clunkier than we’d like it to be, never seems to get the credit it deserves in these little anecdotal stories.) Who needs science when you have something mightier—personal experience?

Another example is the vocal wing of environmentalists who got up one day and decided that genetically modified organisms were bad for you. They had not one shred of evidence for this, but it just kind of felt true. As a result, responsible scientists will be fighting against these zealots for years to come. While the leaders of March for Science events are on the right side of this issue, many of its supporters are not. I’m looking at you, Bernie Sanders; the intellectual rigor behind your stance requiring GMO labelling reflects a level of scientific understanding that would likely lead for calls for self-defenestration from your own supporters if it were applied to, say, something like climate change.

But it does not stop there. Perhaps as irritating as people who know nothing about science are those who know just a little bit—just enough to think they have any idea as to what is going on. Take for example the clever cheer (and unparalleled public declaration of nerdiness):

What do we want?

Science!

When do we want it?

After peer review!

Of course, the quality of most peer-review research is somewhere between bad and unfair to the pixels that gave their lives to display it. Just this past week, a study published by the world’s most prestigious stroke research journal (Stroke), made headlines and achieved media virality by claiming a correlation between increased diet soda consumption and strokes and dementia. Oh, by the way, the authors didn’t control for body mass index [*], even though, unsurprisingly, people who have the highest BMIs had the most strokes. An earlier study that no one seems to remember showed a correlation of around the same magnitude between obesity and strokes alone. But, who cares, right? Ban diet sodas now! Science says they’re linked to strokes and dementia! By the way, Science used to say that diet sodas cause cancer. But Science was, perish the thought, wrong.

If you can get past the writer’s great disdain for just about everyone, he makes very good points.

To add some clarity with regard to “controlling for body mass index,” there’s a concept in research known as a confounding variable. In this case, people who have a higher body mass index (or are more obese) will tend to have more strokes according to previous research which qualifies as a confounding variable when studying the effect of diet soda on strokes. To control for obesity means you set up the research project in such a way you can compare (oranges to oranges) the stroke rates of obese people who drink x amount of diet soda with obese people who do not drink x amount of diet soda and compare stroke rates of standard weight people who drink x amount of diet soda with other standard weight people who do not drink x amount of diet soda. There are other aspects of the research that would also have be considered but to control for body mass index that’s the way I’d set it up.

One point that Faust makes that isn’t made often enough and certainly not within the context of the ‘evidence-based policy movement’ and ‘marches for science’ is the great upheaval taking place within the scientific endeavour (Note: Links have been removed),

… . There are a dozen other statistical games that researchers can play to get statistical significance. Such ruses do not rise to anything approaching clinical relevance. Nevertheless, fun truthy ones like the diet soda study grab headlines and often end up changing human behaviors.

The reason this problem, what one of my friends delightfully calls statistical chicanery, is so rampant is twofold. First, academics need to “publish or perish.” If researchers don’t publish in peer-reviewed journals, their careers will be short and undistinguished. Second, large pharmaceutical companies have learned how to game the science system so that their patented designer molecules can earn them billions of dollars, often treating made-up diseases (I won’t risk public opprobrium naming those) as well as other that we, the medical establishment, literally helped create (opioid-induced constipation being a recent flagrancy).

Of course, the journals themselves have suffered because their contributors know the game. There are now dozens of stories of phony research passing muster in peer-review journals, despite being intentionally badly written. These somewhat cynical, though hilarious, exposés have largely focused on outing predatory journals that charge authors money in exchange for publication (assuming the article is “accepted” by the rigorous peer-review process; the word rigorous, by the way, now means “the credit card payment went through and your email address didn’t bounce”). But even prestigious journals have been bamboozled. The Lancet famously published fabrications linking vaccines and autism in 1998. and it took it 12 years to retract the studies. Meanwhile, the United States Congress took only three years for its own inquiry to debunk any link. You know it’s bad when the U.S. Congress is running circles around the editorial board of one of the world’s most illustrious medical journals. Over the last couple of decades, multiple attempts to improve the quality of peer-review adjudication have disappointingly and largely failed to improve the situation.

While the scientific research community is in desperate need of an overhaul, the mainstream media (and social media influencers) could in the meantime play a tremendously helpful role in alleviating the situation. Rather than indiscriminately repeating the results of the latest headline-grabbing scientific journal article and quoting the authors who wrote the paper, journalists should also reach out to skeptics and use their comments not just to provide (false) balance in their articles but to assess whether the finding really warrants an entire article of coverage in the first place. Headlines should be vetted not for impact and virality but for honesty. As a reader, be wary of any headline that includes the phrase “Science says,” as well as anything that states that a particular study “proves” that a particular exposure “causes” a particular disease. Smoking causes cancer, heart disease, and emphysema, and that’s about as close to a causal statement as actual scientists will make, when it comes to health. Most of what you read and hear about turns out to be mere associations, and mostly fairly weak ones, at that.

Faust refers mostly to medical research but many of his comments are applicable to other science research as well. By the way, Faust has written an excellent description of p-values for which, if for no other reason, you should read his piece in its entirety.

One last comment about Faust’s piece, he exhorts journalists to take more care in their writing but fails to recognize the pressures on journalists and those who participate in social media. Briefly, journalists are under pressure to produce. Many of the journalists who write about science don’t know much about it and even the ones who have a science background may be quite ignorant about the particular piece of science they are covering, i.e., a physicist might have some problems covering medical research and vice versa. Also, mainstream media are in trouble as they struggle to find revenue models.

As for those of us who blog and others in the social media environment; we are a mixed bag in much the same way that mainstream media is. If you get your science from gossip rags such as the National Enquirer, it’s not likely to be as reliable as what you’d expect from The Guardian or the The New York Times. Still, those prestigious publications have gotten quite wrong on occasion.

In the end, readers (scientists, journalists, bloggers, etc.) need to be skeptical. It’s also helpful to be humble or at least willing to admit you’ve made a mistake (confession: I have my share on this blog, which are noted when I’ve found or when they’ve been pointed out to me).

Final comments

Hopefully, this has given you a taste for the wide ranges of experiences and perspectives on the April 22, 2017 March for Science.

Nanotechnology and cybersecurity risks

Gregory Carpenter has written a gripping (albeit somewhat exaggerated) piece for Signal, a publication of the  Armed Forces Communications and Electronics Association (AFCEA) about cybersecurity issues and  nanomedicine endeavours. From Carpenter’s Jan. 1, 2016 article titled, When Lifesaving Technology Can Kill; The Cyber Edge,

The exciting advent of nanotechnology that has inspired disruptive and lifesaving medical advances is plagued by cybersecurity issues that could result in the deaths of people that these very same breakthroughs seek to heal. Unfortunately, nanorobotic technology has suffered from the same security oversights that afflict most other research and development programs.

Nanorobots, or small machines [or nanobots[, are vulnerable to exploitation just like other devices.

At the moment, the issue of cybersecurity exploitation is secondary to making nanobots, or nanorobots, dependably functional. As far as I’m aware, there is no such nanobot. Even nanoparticles meant to function as packages for drug delivery have not been perfected (see one of the controversies with nanomedicine drug delivery described in my Nov. 26, 2015 posting).

That said, Carpenter’s point about cybersecurity is well taken since security features are often overlooked in new technology. For example, automated banking machines (ABMs) had woefully poor (inadequate, almost nonexistent) security when they were first introduced.

Carpenter outlines some of the problems that could occur, assuming some of the latest research could be reliably  brought to market,

The U.S. military has joined the fray of nanorobotic experimentation, embarking on revolutionary research that could lead to a range of discoveries, from unraveling the secrets of how brains function to figuring out how to permanently purge bad memories. Academia is making amazing advances as well. Harnessing progress by Harvard scientists to move nanorobots within humans, researchers at the University of Montreal, Polytechnique Montreal and Centre Hospitalier Universitaire Sainte-Justine are using mobile nanoparticles inside the human brain to open the blood-brain barrier, which protects the brain from toxins found in the circulatory system.

A different type of technology presents a risk similar to the nanoparticles scenario. A DARPA-funded program known as Restoring Active Memory (RAM) addresses post-traumatic stress disorder, attempting to overcome memory deficits by developing neuroprosthetics that bridge gaps in an injured brain. In short, scientists can wipe out a traumatic memory, and they hope to insert a new one—one the person has never actually experienced. Someone could relish the memory of a stroll along the French Riviera rather than a terrible firefight, even if he or she has never visited Europe.

As an individual receives a disruptive memory, a cyber criminal could manage to hack the controls. Breaches of the brain could become a reality, putting humans at risk of becoming zombie hosts [emphasis mine] for future virus deployments. …

At this point, the ‘zombie’ scenario Carpenter suggests seems a bit over-the-top but it does hearken to the roots of the zombie myth where the undead aren’t mindlessly searching for brains but are humans whose wills have been overcome. Mike Mariani in an Oct. 28, 2015 article for The Atlantic has presented a thought-provoking history of zombies,

… the zombie myth is far older and more rooted in history than the blinkered arc of American pop culture suggests. It first appeared in Haiti in the 17th and 18th centuries, when the country was known as Saint-Domingue and ruled by France, which hauled in African slaves to work on sugar plantations. Slavery in Saint-Domingue under the French was extremely brutal: Half of the slaves brought in from Africa were worked to death within a few years, which only led to the capture and import of more. In the hundreds of years since, the zombie myth has been widely appropriated by American pop culture in a way that whitewashes its origins—and turns the undead into a platform for escapist fantasy.

The original brains-eating fiend was a slave not to the flesh of others but to his own. The zombie archetype, as it appeared in Haiti and mirrored the inhumanity that existed there from 1625 to around 1800, was a projection of the African slaves’ relentless misery and subjugation. Haitian slaves believed that dying would release them back to lan guinée, literally Guinea, or Africa in general, a kind of afterlife where they could be free. Though suicide was common among slaves, those who took their own lives wouldn’t be allowed to return to lan guinée. Instead, they’d be condemned to skulk the Hispaniola plantations for eternity, an undead slave at once denied their own bodies and yet trapped inside them—a soulless zombie.

I recommend reading Mariani’s article although I do have one nit to pick. I can’t find a reference to brain-eating zombies until George Romero’s introduction of the concept in his movies. This Zombie Wikipedia entry seems to be in agreement with my understanding (if I’m wrong, please do let me know and, if possible, provide a link to the corrective text).

Getting back to Carpenter and cybersecurity with regard to nanomedicine, while his scenarios may seem a trifle extreme it’s precisely the kind of thinking you need when attempting to anticipate problems. I do wish he’d made clear that the technology still has a ways to go.

Hexanal and preventing (or diminishing) fruit spoilage

More mangoes thanks to an Indian-Sri Lankan-Canadian nanotechnologyresearch project is a Feb. 9, 2015 posting where I highlighted (not for the first time) a three country research project utilizing hexanal in boxes for fruit (mango) storage,

I’ve been wondering what happened since I posted about this ‘mango’ project some years ago (my June 21, 2012 posting and my Nov. 1, 2012 posting) so, it’s nice to get an update from this Fresh Fruit Portal Feb. 4, 2015 posting,

Developed by Canadian, Indian and Sri Lankan researchers in a collaborative project funded by the International Development Research Centre (IDRC), the nanotech mango boxes are said to improve the fruit’s resilience and therefore boost quality over long shipping distances.

The project – which also includes the Tamil Nadu Agricultural University, India and the Industrial Technical Institute, Sri Lanka – has tested the use of the bio-compound hexanal, an artificially synthesized version of a natural substance produced by injured plants to reduce post-harvest losses.

In the Feb. 9, 2015 posting I was featuring the project again as it had received new funding,

  • Researchers from the University of Guelph, Canada, Tamil Nadu Agricultural University, India, and the Industrial Technical Institute, Sri Lanka, have shown that a natural compound known as hexanal delays the ripening of mangos. Using nanotechnology, the team will continue to develop hexanal-impregnated packaging and biowax coatings to improve the fruit’s resilience during handling and shipping for use in Asia, Africa, and the Caribbean. It will also expand its research to include other fruit and look at ways to commercialize the technologies.

New funding will allow the research teams to further develop the new technologies and involve partners who can bring them to market to reach greater numbers of small-holder farmers.

A Dec. 29, 2015 article (Life of temperate fruits in orchards extended, thanks to nanotech) in The Hindu newspaper provides an update on the collaboration,

Talking to mediapersons after taking part in a workshop on ‘Enhanced Preservation of Fruits using Nanotechnology Project’ held at the Horticultural College and Research Institute, Periyakulam near here on Monday [Dec. 28, 2015], he [K.S. Subramanian, Professor, Department of Nano Science and Technology, TNAU, Coimbatore] said countries like Sri Lanka, Tanzania, Kenya and West Indies will benefit. Post-harvest loss in African countries was approximately 80 per cent, whereas it was 25 to 30 per cent in India, he said.

With the funds sanctioned by Canadian Department of Foreign Affairs, Trade and Development and International Development Research Centre, Canada, the TN Agricultural University, Coimbatore, involving scientists in University of Guelph, Canada, Industrial Technology Institute, Colombo, Sokoine University of Agriculture, Tanzania, University of Nairobi [Kenya], University of West Indies, Trinidad and Tobago, have jointly developed Hexanal formulation, a nano-emulsion, to minimise post harvest loss and extend shelf life of mango.

Field trials have been carried out successfully in Dharmapuri and Krishnagiri on five varieties – Neelam, Bangalura, Banganapalle, Alphonso and Imam Pasand. Pre-harvest spray of Hexanal formulation retained fruits in the trees for three weeks and three more weeks in storage.

Extending life to six to eight weeks will benefit exporters immensely as they required at least six weeks to take fruits to European and the US market. Existing technologies were sufficient to retain fruits up to four weeks only. Domestic growers too can delay harvest and tap market when in demand.

In a companion Dec. 29, 2015 article (New technologies will enhance income of farmers) for The Hindu, benefits for the Indian agricultural economy were extolled,

Nano technology is an ideal tool to extend the shelf life and delay in ripening mango in trees, but proper bio-safety tests should be done before introducing it to farmers, according to Deputy Director General of ICAR N.K. Krishnakumar.

Inaugurating a workshop on Enhanced Preservation of Fruits using Nanotechnology Project held at the Horticultural College and Research Institute at Periyakulam near here on Monday [Dec. 28, 2015], he said that bio safety test was very important before implementing any nano-technology. Proper adoption of new technologies would certainly enhance the income of farmers, he added.

Demand for organic fruits was very high in foreign countries, he said, adding that Japan and Germany were prepared to buy large quantum of organic pomegranate. Covering fruits in bags would ensure uniform colour and quality, he said.

He appealed to scale down use of chemical pesticides and fertilizers to improve quality and taste. He said dipping mango in water mixed with salt will suffice to control fungus.

Postgraduate and research students should take up a problem faced by farmers and find a solution to it by working in his farm. His thesis could be accepted for offering degree only after getting feedback from that farmer. Such measure would benefit college, students and farmers, Mr. Krishnakumar added.

It’s good to get an update on the project’s progress and, while it’s not clear from the excerpts I have here, they are testing hexanal with on fruit other than mangoes.

Afrofuturism in the UK’s Guardian newspaper and as a Future Tense Dec. 2015 event

My introduction to the term, Afrofuturism was in a March 11, 2015 posting by Jessica Bland for the Guardian in the Technology/Political Science section. It was written on the occasion of a then upcoming FutureFest event,

This is unapologetically connected to FutureFest, the festival Nesta (where I work) is holding this weekend in London Bridge. These thoughts represent the ideas that piqued my interest while curating talks and exhibits based on the thought experiment of a future African city-superpower. George Clinton, Spoek Mathambo, Tegan Bristow and Fabian-Carlos Guhl (from Ampion Venture Bus) will be speaking during the weekend. Thomas Aquilina is displaying photographs from his trip and the architects of the Lagos 2060 project will take part in a debate on whether their fiction can lead to a different kind of future.

In anticipation of the March 2015 FutureFest event, Bland had  written a roundup piece about “New sounds from South Africa and Nigeria’s urban science fiction [that] could change the future of technology and the city.” Here are some excerpts from her piece (Note: Links have been removed),

Strong stories or visions of the future stick around. The 1920s sci-fi fantasy of a jetpack commute still pops up in discussions about the future of technology, not to mention as an option on the Citymapper travel app. By co-opting or creating new visions of the future, it seems possible to influence the development of new products and services – from consumer tech to urban infrastructure. A new generation of African artists is taking over the mantle of Afrofuturist arts from a US-centred crowd. They could bring a welcome change to how technology is developed in the region, as well as a challenge to the dominance of imported plans for urban development.

Last Thursday’s London gig from Fantasma was sweaty and boisterous. It was also very different from the remix of Joy Division’s She’s Lost Control that brought front man Spoek Mathambo to the attention of a global audience a couple of years ago. Fantasma is a group of South African musicians with different backgrounds. Guitarist Bhekisenzo Cele started the gig with three of his own songs, introducing the traditional Zulu maskandi music that they went on to mix with shangaan electro, hiphop, punk, electronica and everything in between.

The gig had a buzz about it. But the performance was from a new collective trying things out; it wasn’t as genre-smashing as expected. And expectations ride high for Spoek. In 2011, he titled a collection from his back catalogue ‘Beyond Afrofuturism’. He took on, at least in name, a whole Afro-American cultural movement: embodied by musicians like Sun Ra, George Clinton and Drexciya. A previous post on this blog by Chardine Taylor-Stone describes the roots of Afrofuturism in science fiction that centres on space travel and human enhancement. But she goes on to say: “Afrofuturism also goes beyond spaceships, androids and aliens, and encompasses African mythology and cosmology with an aim to connect those from across the Black Diaspora to their forgotten African ancestry.” Spoek shares what he calls a cultural lineage with this movement. But he is not Afro-American. He also shares a cultural lineage with the sounds of South African musicians he grew up listening to.

Other forms of art are taking an increasingly activist role in the future of technology. Lydia Nicholas’s description of the relationship between Douglas Adam’s fictional Hitchhiker’s Guide and the real life development of the iPad shows how science fiction can effortlessly influence the development of new technology.

The science fiction collection Lagos 2060 is a more purposeful intervention. Published in 2013, it speculates about what it will be like to live in Lagos 100 years after Nigeria gained independence from the UK. It was born out of a creative writing workshop initiated by DADA books in Lagos. Foundation director of DADA, Ayodele Arigbabu, described the collection and other similar video and visual art work (in an email): “Far more than aesthetic indulgence, these renditions are a calibration of the changes deemed necessary in today’s political, technical and cultural infrastructure.”

Bland also explores a history of this movement,

Gaston Berger was the Senegalese founder of the academic journal Prospectiv in 1957. To many, he was the first futurist, or at least one of the first people to describe themselves as one. He founded promotes the practice of playing out the human consequences of today’s action. This is about avoiding a fatalistic approach to the future: about being proactive and provoking change, as much as anticipating it.

Berger’s early work spawned a generation, and then another and another, of professional futurists. They work in different ways and different places. Some are in government, enticing and frightening politicians with the prospect of a different transport system, healthcare sector or national security regime. Some are consultants to large companies, offering advice on the way that trends like 3D printing or flying robots will change their sector. An article from 1996 does a good job of summarising the principles of this movement: don’t act like an ostrich and ignore the future by putting your head in the sand; don’t act like a fireman and just respond to threats to your future; and don’t focus just on insurance against for the future.

Bland has written an interesting and sprawling piece, which in some way reflects the subject. Africa is a huge and sprawling continent.

Slate, a US online magazine, is hosting along with New America and Arizona State University a Future Tense event on Afrofuturism but this seems to be quite US-centric. From the Future Tense Afrofuturism event webpage on the Slate website (Note: Links have been removed),

Future Tense is hosting a conversation about Afrofuturism in New York City on December 3rd, 2015 from 6:30-8:30 p.m.

Afrofuturism emphasizes the intersection of black cultures with questions of imagination, liberation, and technology. Rooted in works like those of science fiction author Octavia Butler, avant-garde jazz legend Sun Ra, and George Clinton, Afrofuturism explores concepts of race, space and time in order to ask the existential question posed by critic Mark Dery: “Can a community whose past has been deliberately erased imagine possible futures?”

Will the alternative futures and realities Afrofuturism describes transform and reshape the concept of black identity? Join Future Tense for a discussion on Afrofuturism and its unique vantage on the challenges faced by black Americans and others throughout the African diaspora.

During the event, enjoy an Afrofuturist inspired drink from 67 Orange Street. Follow the discussion online using #Afrofuturism and by following @NewAmericaNYC and @FutureTenseNow.

Click here to RSVP. Space is limited so register now!

PARTICIPANTS

Michael Bennett
Principal Investigator, School for the Future of Innovation in Society, Arizona State University
@MGBennett

Ytasha Womack
Author, Afrofuturism: The World of Black Sci-Fi and Fantasy Culture and Post Black: How A New Generation is Redefining African American Identity
@ytashawomack

Juliana Huxtable
DJ and Artist
@HUXTABLEJULIANA

Walé Oyéjidé
Designer and Creative Director, Ikire Jones
@IkireJones

Aisha Harris
Staff writer, Slate
@craftingmystyle

It seems we have one word, Afrofuturism, and two definitions. One where Africa is referenced and one where African-American experience is referenced.

For anyone curious about Nesta, where Jessica Bland works and the Future Fest host (from its Wikipedia entry),

Nesta (formerly NESTA, National Endowment for Science, Technology and the Arts) is an independent charity that works to increase the innovation capacity of the UK.

The organisation acts through a combination of practical programmes, investment, policy and research, and the formation of partnerships to promote innovation across a broad range of sectors.

That’s it for now.