Category: ScienceNews

A brain-computer interface allows a severely paralysed patient not only to move and use a robotic arm, but also to feel the sensations as the mechanical hand clasps objects . We hear from Jennifer Collinger at Pittsburgh University’s Rehab Neural Engineering Labs. And Nathan Copeland, who has been controlling the robotic arm with his thoughts via a series of brain implants.

Ralph Baric of the University of North Carolina tells us about the development of a multi-component vaccine that would be effective not just against the current coronavirus outbreak and its variants, but also future outbreaks from SARS-like coronaviruses that we don’t even know about yet.

Blood clots, thromboses, have been a problem for a small number of people following Covid vaccination Paul Knöbl, and a team of medics in Vienna have worked out the link between vaccination and clot development. They now have a method to treat such clots – so they should not be fatal.

And how did fungi and plants come to live together? Symbiotic relationships between the two are a key component of the evolution of life. Melanie Rich of the University of Toulouse has been looking at the present day genetic markers which allowed plants and fungi to help each other as they first colonised land millions of years ago.

Also...You are a star. Literally. You are a carbon-based life form and those atoms of carbon in the molecules that make up your cells were formed by a nuclear fusion reaction at the heart of long dead stars. That goes for the oxygen in your lungs too. And the red blood cells that carry that oxygen to your tissues? They contain haemoglobin, and nestled at the heart of each molecule is an element (iron) formed by a supernova - the fiery explosion at the death of a star. Your body is a walking, thinking museum of some of the most violent events in the universe.

This, as CrowdScience host Marnie Chesterton discovers, isn’t as special as it sounds. All of the stuff on the earth - the elements that make clouds and mountains and mobile phones – they all have an origin story. CrowdScience tells that story, starting with the big bang and ending with physicists, creating new elements in the lab. Find out the age of the elements and the distance they have travelled to make their current home on earth. (Image: Artificial tactile perception allows the brain-computer interface user to transfer objects with a robotic arm at twice the speed of doing it without the feedback. Credit: UPMC/Pitt Health Sciences Media Relations)

You are a star. Literally. You are a carbon-based life form and those atoms of carbon in the molecules that make up your cells were formed by a nuclear fusion reaction at the heart of long dead stars. That goes for the oxygen in your lungs too. And the red blood cells that carry that oxygen to your tissues? They contain haemoglobin, and nestled at the heart of each molecule is an element (iron) formed by a supernova - the fiery explosion at the death of a star. Your body is a walking, thinking museum of some of the most violent events in the universe. This, as CrowdScience host Marnie Chesterton discovers, isn’t as special as it sounds. All of the stuff on the earth - the elements that make clouds and mountains and mobile phones – they all have an origin story. CrowdScience tells that story, starting with the big bang and ending with physicists, creating new elements in the lab. Find out the age of the elements and the distance they have travelled to make their current home on earth. Interviewees: Dr Dorota Grabowska, Professor Andrea Sella, Dr Chris Pearson, Dr Jacklyn Gates

(Photo: Neutron star. Credit: Getty Images)

Solar geoengineering--the human attempt to cool the planet by reflecting sunlight away from Earth--is fraught with technological and ethical challenges. Maddie discusses some of these with contributor Ariela Zebede.

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A brain-computer interface allows a severely paralysed patient not only to move and use a robotic arm, but also to feel the sensations as the mechanical hand clasps objects . We hear from Jennifer Collinger at Pittsburgh University’s Rehab Neural Engineering Labs. And Nathan Copeland, who has been controlling the robotic arm with his thoughts via a series of brain implants.

Ralph Baric of the University of North Carolina tells us about the development of a multi-component vaccine that would be effective not just against the current coronavirus outbreak and its variants, but also future outbreaks from SARS-like coronaviruses that we don’t even know about yet.

Blood clots, thromboses, have been a problem for a small number of people following Covid vaccination Paul Knöbl, and a team of medics in Vienna have worked out the link between vaccination and clot development. They now have a method to treat such clots – so they should not be fatal.

And how did fungi and plants come to live together? Symbiotic relationships between the two are a key component of the evolution of life. Melanie Rich of the University of Toulouse has been looking at the present day genetic markers which allowed plants and fungi to help each other as they first colonised land millions of years ago.

(Image: Artificial tactile perception allows the brain-computer interface user to transfer objects with a robotic arm at twice the speed of doing it without the feedback. Credit: UPMC/Pitt Health Sciences Media Relations)

Presenter: Roland Pease Producer: Alex Mansfield

During the Great Depression, President Franklin Delano Roosevelt created the Civilian Conservation Corps to improve the country's public lands, forests, and parks. Now, nearly a hundred years later, President Biden is trying to bring a similar version of it back. He wants to launch the Civilian Climate Corps to address the threat of climate change.

NPR's White House correspondent Scott Detrow and National Desk Correspondent Nathan Rott report on Biden's plan and how it could play out.

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In general, there are more men in STEMM fields than women. Representation in science, technology, engineering, math, and medicine is even lower for women of color — facing racial discrimination on top of gender discrimination. And then, the pandemic hit. Short Wave reporter Emily Kwong speaks with Dr. Eve Higginbotham about our earliest understandings of how the pandemic has impacted women in STEMM, and what support institutions can offer to make it easier for women in stay in the workforce and progress in their careers. You can download a free PDF of the 2021 study here.

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Many Americans are baring their faces in public again, following new CDC recommendations that fully vaccinated people don't need them in most settings. But there are critics who question the CDC's decision and say it's too soon. Maddie Sofia talks with NPR health correspondent Allison Aubrey about this latest mask guidance and the questions it raises for businesses, essential workers, and the most vulnerable.

If you'd like help finding a vaccination site, you can dial 1-800-232-0233 or go to vaccines.gov (English) or vacunas.gov (Spanish) for more information.

Have questions about the latest coronavirus headlines? Email us at shortwave@npr.org and we might cover it on a future episode.

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When human judgment enters the picture, so too will errors in human judgment. Think of this as “noise,” just as you might think of a signal-to-noise ratio in an audio signal. And just as in listening to music, this noise is not a feature, but a flaw. In the context of human action, management professor at HEC Paris and former McKinsey senior partner Olivier Sibony defines “noise” as the unwanted variability in human judgment. “When you look at how people make a professional judgment, there is an average error … and that is what has traditionally been called bias in statistics and in the study of judgment. But when you have already identified bias, there is something left, and that is the unshared error, the unwanted variability of errors, that is noise.”

In a new book, Noise: A Flaw in Human Judgment, by psychologist and Bites alumnus Daniel Kahneman, Sibony, and Harvard law professor Cass Sunstein (author of Nudge), the trio look at the lottery that noise creates in social outcomes, and discuss ways to practice better “decision hygiene” to prevent noise from infecting important outcomes.

Coinciding with the release of Noise, Sibony spoke with interviewer David Edmonds in this Social Science Bites podcast about noise as a concept, the types of noise, why acknowledging it matters, and a little on what we can do to avoid it. This is an area of great interest for Sibony, whose own research centers on reducing the impact of behavioral bias.

“Bias and noise,” Sibony explains, “are mathematically equivalent in the effect they have on error. Noise causes exactly as much error as bias does for the same quantity of noise or bias.

“And so, if you can reduce noise, you can reduce error.” Or put another way, make better decisions.

He gives the example of insurance claims adjusters. “When you look at how two of these people judge the same case, what price they set on the same insurance policy or the price they set on the same claim, and you ask them how much they expect to disagree, they say, ‘Of course we’re not going to be in perfect agreement; it’s a matter of judgment, after all. It’s still a calculation – we’re not just adding up numbers and saying, “The answer is X.” Otherwise our job would just be automated. That’s what makes the job interesting – it’s a matter of judgment. So we expect some disagreement between us. But hey! We are all highly qualified, competent people, so we are more or less interchangeable depending on who is available.’”

If you ask the adjusters, or their bosses, about how much variability they expect, the answers come back around 10 percent. And if you ask business executives in general what they would expect the difference to be – and Sibony talked to hundreds -- the answers came back at 10 to 15 percent.

But looking at the actual variability in real life, he reveals, the differences vary by as much as 55 percent.

This isn’t just some peculiarity of insurance. “This was,” Sibony said, “something we found everywhere we looked!” He offers many examples: assessments by financial professionals, x-rays read by skilled doctors, professors grading essays, and many more. What he terms “big differences” appeared repeatedly

“More worrisome, perhaps, if you look at how judges sentence people who have been found guilty of a crime … [W]hen the average sentence is seven years in prison, the average difference, the mean difference between two judges is three-and-a-half.” And so, as Sibony notes, when appearing before two judges, you’ve already been sentenced to five years, or to nine years, “just based on the luck of the draw.”

This variability, this happenstance in outcomes, matters for a trio of reasons: fairness (“when similarly located people are not treated similarly, it is unfair”); credibility of the underlying institutions; and because we’re routinely making bad (or at least not the best) decisions.

In addition to teaching strategy, decision making and problem solving at HEC Paris, Sibony is an associate fellow at Oxford University’s Saïd Business School. He writes often on strategy and decision making in the academic and popular press, and his book Vous Allez Commettre Une Terrible Erreur ! (published in English as You’re About to Make a Terrible Mistake!) received the was awarded the Manpower Foundation Grand Prize in 2019 for best management book. He is also a knight in the French Order of the Légion d’Honneur.

(Encore.) Drug overdose deaths are on the rise all around the country, including in Chicago, Illinois. ProPublica Illinois reporter Duaa Eldeib explains how the coronavirus pandemic has exacerbated the opioid epidemic, and the challenges that public health officials are facing as they work to reduce opioid-related deaths.

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We wouldn’t drink dirty water so why do we put up with polluted air? Researchers are calling for a major rethink on our attitude to air quality. Professor Lidia Morawska, from the Queensland University of Technology, says attention to air quality during the Covid pandemic has shown how levels of airborne disease can be reduced.

Sam Wilson from the UK Medical Research Council, University of Glasgow Centre for Virus Research has been investigating genetic mechanisms associated with susceptibility to Covid infection. His team has identified a molecule that detects SARS-COV-2 when it starts to replicate in our cells. However, not all humans have this protective mechanism, which may help explain why some people become very ill with Covid and others have little if any symptoms.

Many Europeans lack this protective molecule, whereas the vast majority of Africans have it. The difference can be seen in cell cultures. However, the lack of diversity in the cells used in experiments worldwide can be a serious problem when looking at genetic differences as Samara Linton reports.

Nuclear material buried beneath the doomed Chernobyl nuclear power plant is becoming more active Neil Hyatt Professor of Nuclear Materials Chemistry at Sheffield University says it’s a small increase but needs to be monitored.

And There are over 400,000 species of plant on earth, they’re on every continent including Antarctica. But humans only regularly eat about 200 species globally, with the vast majority of our nutrition coming from just three species. Many of the fruits, leaves and tubers that other plants grow are packed full of toxins that are poisonous to us, and would make us very ill if we ate them. But could we take out the poisons and create new, edible crops? That’s what CrowdScience listener Marija wants to know.

Crowdscience dives into this topic, and uncovers the that many crops are poisonous, and why so few plants are eaten globally. Host Anand Jagatia finds that even the modern scientific processes of crop breeding are very slow. But science can now engineer plants at the genetic level by adding, silencing or removing specific genes. This ‘genetic modification’ is hugely controversial but can be highly effective.

Anand finds a man who has spent decades making cotton seeds edible by removing the poisons they naturally produce in their seeds. This GM crop could help fend-off starvation. But sometimes introducing poisons can be as important as removing them, as we find in the genetically modified ‘BT eggplants’ in Bangladesh. The new gene makes the vegetable toxic to a major insect pest, so they are much easier to grow.

But GM crops are not the perfect solution. They have problems of gene escape, can increase the use of environmentally damaging herbicide, and can be open to monopolisation. In some countries, particularly in Europe, GM crops are hugely controversial. Anand finds out whether these concerns stand up to science and looks at the counterpoint in developing countries in Africa, South Asia and elsewhere, where local farmers like Patience Koku in Nigeria have little time for some of the concerns around GM, particularly as they see poor harvests, poverty and starvation as the more pressing problems.

(Photo by Sean Gallup/Getty Images)