Category: ScienceNews

"Dialects" is one of those words tossed around a lot when talking about human language. They indicate where a speaker is from. But dialects aren't exclusive to humans; scientists have known for a while that whales and songbirds also show these variations in language. Today, NPR science correspondent Nell Greenfieldboyce explains research that expands that list to include naked mole rats.

Yearning for more episodes about communication between animals? Or wish we would cover something else entirely? We'd love to hear your suggestions — shortwave@npr.org.

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More than 61 million people in the U.S. are fully vaccinated against COVID-19. We're also now averaging over 3 million shots per day. But at the same time, in at least 20 states, reported cases are on the rise again. So today, NPR health correspondent Allison Aubrey rounds up some of the latest coronavirus news – on vaccines, CDC guidance on travel, the possibility of a fourth wave, and more.

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Currently, suicide is the 10th leading cause of death in the US. But research shows that suicide is preventable. Host Emily Kwong talks with NPR health correspondent Rhitu Chatterjee about the signs that someone you know may be thinking about dying, the ways you can support them, and how to possibly prevent suicide.

To read more of the story, find Rhitu's reporting here.

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If a tree falls in a forest, and no-one is there to hear it, does it make a sound? This is an age-old debate that listener Richard and his family have been arguing about for years. Can CrowdScience settle it once and for all?

Caroline Steel speaks to experts in hearing, biology, philosophy, physics and sound design, which takes her to some unexpected places.

Professor Stefan Bleek is an expert in psychoacoustics who says that sounds only exist in our heads. Dr Eleanor Knox and Dr Bryan Roberts are philosophers that make her question if anything exists outside our own perception. Professor Lilach Hadany wonders if it’s limited to humans and animals - could other plants hear the falling tree too? And Mat Eric Hart is a sound designer who says that sound is subjective – it’s always tangled up with our own interpretations.

Things get truly weird as we delve into the strange implications of quantum physics. If there is such a thing as reality, doesn’t it change when we’re there to observe it? Does the tree even fall if we aren’t there?

Presenter: Caroline Steel Producer: Anand Jagatia

(Image: Fallen Tree. Credit: Getty Images)

We ask allergy expert Dr. Juanita Mora if seasonal allergies are getting worse. Plus, some quick tips for managing those pesky allergy symptoms.

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After last year’s first wave of covid-19 in the UK, individuals who had been discharged after hospitalisation suffered higher rates of coronary and respiratory disorders, and even diabetes subsequently over 140 days. As Dr Ami Banerjee of University College London explains, out of 48,000 cases, patients who had had acute covid-19 were four times more likely to be readmitted and 8 times more likely to die. Ami’s team suggests in their paper published in the British Medical Journal that diagnosis, treatment and prevention of post-covid syndrome needs an integrated approach.

In France, researcher Xavier Montagutelli describes how his team has observed that unlike the original virus, some of the newer Variants of Concern can infect mice in laboratories. They do not show serious illness, but nevertheless host the virus in their lungs. Whilst infection is unlikely in natural environments and not yet observed in the wild, it does show how the viral variants can extend the host range, perhaps leading to more opportunities for mutation. But this finding, posted as a pre-print, also perhaps represents an avenue for deeper gene-specific research that has not so far been possible.

Over in Colombia, Monica Carvalho of the Smithsonian Tropical Research Institute describes her team’s findings regarding the origins of the diversity and habitat of rainforests in south America. Looking at leaf fossils and pollen grains from 60 million years ago, they have found significant differences between the forests of the dinosaurs, and the ones we see today. As they write in the journal Science, it all changed when the Chixulub meteor hit the Gulf of Mexico and the global lights went out. The rainforests that grew back were simply not the same.

But much further back in time, some billion years ago, the forests of the world that were changing the chemistry and making seas inhabitable allowing complex multicellular life, consisted of pencil-lead sized algae quietly photosynthesizing in the shallows of an ocean in what is today remote Canada. Katie Maloney of University of Toronto Mississauga spotted fossils of just these when out on a field trip in Yukon territory. Publishing in Geology Magazine this week, her eagle-eyed finds shed light on this crucial epoch in life history of which there are scant fossilized remains.

Image: Rainforest canopy Credit: Universal Images Group via Getty Images

Presenter: Roland Pease Producer: Alex Mansfield

When Jim Scott mentions ‘resistance,’ this recovering political scientist isn’t usually talking about grand symbolic statements or large-scale synchronized actions by thousands or more battling an oppressive state. He’s often referring to daily actions by average people, often not acting in concert and perhaps not even seeing themselves as ‘resisting’ at all.

The ‘problem’ with political scientists, he tells interviewer David Edmonds, in this Social Science Bites podcast, “is that when they’re talking about resistance they’re tending to talk about overt declarations – protests in the streets, marches, or potentially armed combat. What I’ve found is that throughout history, open resistance of this kind is impossible or suicidal. The result is a lot of what I call ‘unobtrusive forms of resistance.’”

There are, he notes, “very many different kinds of resistance: forms of resistance that announce themselves publicly and forms that are more subtle and unobtrusive in order to protect the people who are protesting from massive retaliation.”

He offers several examples of this unobtrusive resistance, such as poaching, squatting, and desertion - “common weapons of people who don’t have formal power.”

In this podcast, Scott draws on the year and half he spent in a Malaysian village, in the late 1970,s to discuss insights he gained about resistance (and which resulted in his Weapons of the Weak: Everyday Forms of Peasant Resistance). Scott learned the Malay language, acquainted himself with the local Kedah dialect, and studied first the rich and then the poor in this village. Mechanized, combine harvesters had taken over rice harvests in the area, leaving many people out of work and many tenants homeless. While there was no organized public protesting – that would have been foolhardy – he witnessed sabotage in the fields and ousted tenants killing the chickens of those who had evicted them.

In a “a subtle showing of contempt,” people who felt badly treated would look the other way when someone they hated crossed their path. “The kind of shunning was extraordinarily effective and humiliating in a face-to-face community of such a small size.” It reflected, in turn, the psychic violence done to the poor -- “Inequality and injustice almost always is reflected in a loss of cultural dignity and standing.”

Scott sees resistance from several vantage points in large part because he’s untethered himself from many academic restrictions, “defecting” from a discipline when he finds its approaches miss the point. He trained as a political scientist, for example, but as he saw how it studied elites and mass populations differently -- conducting social science “behind their backs,” as he put it -- he decamped to anthropology. ( But he argues every anthropologist should come with a historian strapped to their back.

“James Scott has taught us to see how art can fuel resistance, how social planning can undermine social justice, how anarchic principles inform everyday acts of resistance, and how agriculture led to the rise of state control,” said Tamar Szabó Gendler, the dean of Yale’s Faculty of Arts and Sciences, when the Social Science Research Council awarded him the Albert O. Hirschman Prize last year. 

Many skin conditions, from rashes to Lyme disease to various cancers, present differently on dark skin. Yet medical literature and textbooks don't often include those images, pointing to a bigger problem in dermatology. Today on the show, we take a close look at how the science of skincare has evolved to better serve patients of color, but still has a long way to go.

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When lightning strikes the ground, it can leave behind a root-like rock called a fulgurite. Host Maddie Sofia talks with NPR science correspondent Nell Greenfieldboyce about what lightning and its funky rock creation can reveal about the origins of life.

To read more of the story, check out Nell's reporting here.

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Our colleagues at the TED Radio Hour introduce us to wildlife filmmaker Ariel Waldman. She says the coldest continent is brimming with invisible life that can only be seen through microscopes, including tardigrades (one of Maddie's favorite critters).

Listen to the full TED Radio Hour episode, Through The Looking Glass, here.

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