Category: ScienceNews

In 2021, Short Wave host Emily Kwong ran her first marathon. In collaboration with our colleagues at Life Kit, Emily talks about her experience and discusses keys to training with running coach Laura Norris.

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Wuhan's Huanan Seafood Market is associated with many of the first cases or Covid- 19, but data on precisely how and from where the virus might have first spread has been difficult to find. However a re-examination of the earliest samples collected from the market seem to pinpoint where the virus first showed itself. Sydney University virologist Eddie Holmes says this evidence will be crucial in determining which animals may have initially passed the virus to humans.

Humans are known to have passed the Sars-Cov-2 virus to other animals, including cats, mink and deer. Canadian researchers have recorded the first incident of a modified form of the virus passing back from deer to humans. Virologist Samira Mubareka from the University of Toronto explains the implications.

Chernobyl, the site of the worlds worst nuclear accident is back in the news as the Russian invasion of Ukraine led to a stirring up of nuclear material when troops entered the site. Ukraine has a number of nuclear reactors, Claire Corkhill, professor of nuclear materials at Sheffield University explains the potential risks from the current conflict and safeguards in place.

And we hear from Svitlana Krakovska Ukraine's representative on the Intergovernmental panel on Climate Change, on her thoughts on the prospects for climate action and scientific progress in Ukraine.

Image: Disinfection Work At Wuhan Huanan Wholesale Seafood Market, China 4 March 2020. Credit: Zhang Chang / China News Service via Getty Images.

Presenter: Roland Pease Producer: Julian Siddle

The United Nations Intergovernmental Panel on Climate Change (IPCC) just released the second of three reports on climate change. Nearly 300 scientists from all over the world worked together to create this account of how global warming is affecting our society.

NPR climate reporter Rebecca Hersher fills us in on this major climate science report and actually brings three empowering takeaways hidden within it.

Read the report here: https://bit.ly/3hzWNFv

And listen to Rebecca Hersher's hopeful takeaways from the first report: https://n.pr/3pwZRGX

What empowers you when thinking about climate change? Email the show at shortwave@npr.org!

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What bird has a ten-foot wingspan and breeds almost exclusively on a single island in the Pacific Ocean? Find out in this special quiz episode of Short Wave. Host Emily Kwong tests the bird knowledge of musician and nature enthusiast Anthony Albrecht. He recently produced an album of 53 calls from threatened Australian birds to bring awareness to their vulnerable status.

Listen to the album, titled Songs of Disappearance, released by the Bowerbird Collective and BirdLife Australia, here.

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Kathelijne Koops, a biological anthropologist at the University of Zurich, works to determine what makes us human. And she approaches this quest by intensely studying the use of tools by other species across sub-Saharan Africa.

“Look at us now …” she tells interviewer David Edmonds in this Social Science Bites podcast. “We are really the ultimate technological species. And the question is, ‘How did we get to where we are now?’ If we want to know why we are so technological, and how do we acquire tool-use skills, etc., it’s really interesting to look at our closest living relatives, chimpanzees and also bonobos.

“Why do, or don’t they use tools, and what do they use tools for, and what environmental pressures might influence their tool use.”

So Koops has been studying, first as a grad student and now as director of her own lab, the Ape Behaviour & Ecology Group at the University of Zurich, several groups of wild apes. (Chimps and bonobos, along with orangutans and gorillas, are labelled as great apes, and with humans, are members of the family Hominidae.) She also directs the Swiss National Science Foundation-funded Comparative Human and Ape Technology Project, which looks at ecological, social and cognitive factors on the development of tool use.

In this interview, Koops focuses on two decades of work she and her team conducts, along with Guinean collaborators from the Institut de Recherche Environnementale de Bossou, in the Nimba Mountains in the southeastern portion of the West African country of Guinea. The field site is remote, and work takes place in 10-day shifts at one of two camps. Researchers gather data on the chimps during daylight hours – if the chimps cooperate. “If the chimpanzees want to get away they can,” Koops details, “so even though we’ve worked there a long time you cannot follow them all day like you can at some other study sites.” The researchers also use motion-triggered cameras near well-trod areas  – the humans dubbed them “chimpanzee highways” – where the chimps frequent.

Among the tool-using behaviors Koops has seen in the study group is seeing these chimps use long sticks to dig up ants for a snack without being devoured themselves, and using stones and branches to open up fruit casings. What this group doesn’t do, she continued, is use “percussive techniques” to open up edible nuts, even though another population of chimps a few kilometers away does exactly that.

To see if it is opportunity or is it necessity that spurred tool use and tool evolution, Koops’ team “cranked opportunity up by a million” by scattering lots of nuts that were otherwise less common in the primary forest habitat of the Nimba residents alongside lots of handy stones good for nut-cracking. The result was … not much innovation by the chimps.

“It really seems difficult to innovate on your own,” she comments. “… They really need to see from another chimpanzee how to crack these nuts.” In general, she notes, there’s not much ‘active teaching’ among her subjects but a lot of observation of older individuals.

She cites other experimenters’ similar work on 4- and 5-year-old humans, which in turn saw similar low instances of innovation. While being careful not to overclaim, Koops says “it looks like some of the building blocks of our culture are really already there in chimps.”

NPR science correspondent Lauren Sommer joins Short Wave host Emily Kwong to talk about a team of researchers who were the first to document a pack of orcas attacking a blue whale. Their work shows that killer whales, while stars in marine parks and movies, are also the ocean's top-- and often vicious-- predators. Humans' complex relationship with them may say more about humans than about the orcas.

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Scientists are piecing together what led up to a massive volcanic eruption in Tonga last month. NPR science correspondent Geoff Brumfiel joins the show to talk about the likely sequence of events— and what it can teach us about future eruptions like this one.

Email the show at ShortWave@NPR.org

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A scheme in the US designed to prevent industrial espionage and the theft of intellectual property, is to be refocused after it was accused of unfairly targeting Chinese American scientists. We speak to Gang Chen, a professor from MIT who was falsely accused of financial crimes, and Holden Thorp Editor in Chief of the Journal Science who tells us why the ‘China Initiative’ is at odds with the reality of international scientific collaboration.

And a huge study of farmed animals in China, from raccoon dogs to porcupines and Asian badgers, reveals that they carry a wide range of pathogens, including forms of avian flu and coronaviruses. Virologist Eddie Holmes from the University of Sydney, who was involved in the analysis, says these viruses may have the potential to jump species and infect humans – possibly leading to another pandemic.

Controlling fire was a turning point in the development of human civilisation. But how did fire become part of the human toolkit? It’s a question that has got Crowdscience listener Joseph wondering. He wants to know how humans first made fire and how that knowledge spread around the world, eventually developing into our industrial civilisations today.

Archaeologists have many different ideas and theories about this. Did humans learn the skill millions of years ago, and carry it with them as they migrated out of what is now Africa? Or was it a skill developed much later, after different groups had settled in different locations? Did people share the skill with each other or did different groups of people discover it individually?

Marnie Chesterton speaks to experts to try to piece together the archaeological clues to discover what kindled humankind's relationship with fire and flame. She hears about the early evidence of fire from Anand Jagatia, who visits Wonderwerk Cave in South Africa, and she speaks to an archaeologist who has found remains of burned flint suggesting campfire locations dating back hundreds of thousands of years in Israel. Marnie also tries her hand at making fire, Neanderthal style.

(Image: Students. Credit: Getty Images)

Controlling fire was a turning point in the development of human civilisation. But how did fire become part of the human toolkit? It's a question that has got Crowdscience listener Joseph wondering. He wants to know how humans first made fire and how that knowledge spread around the world, eventually developing into our industrial civilisations today.

Archaeologists have many different ideas and theories about this. Did humans learn the skill millions of years ago, and carry it with them as they migrated out of what is now Africa? Or was it a skill developed much later, after different groups had settled in different locations? Did people share the skill with each other or did different groups of people discover it individually?

Marnie Chesterton speaks to experts to try to piece together the archaeological clues to discover what kindled humankind's relationship with fire and flame. She hears about the early evidence of fire from Anand Jagatia, who visits Wonderwerk Cave in South Africa, and she speaks to an archaeologist who has found remains of burned flint suggesting campfire locations dating back hundreds of thousands of years in Israel. Marnie also tries her hand at making fire, Neanderthal style.

Contributors: Dr Andrew Sorensen, Leiden University Prof Nira Alperson-Afil, Bar-Ilan University Prof Richard Wrangham, Harvard University Dr David Morris, McGregor Museum Candice Koopowitz, Simon Fraser University Dr Katharine MacDonald, Leiden University

Presented by Marnie Chesterton and Produced by Hannah Fisher for BBC World Service

Image Credit: Getty Images

One of the video games that Short Wave's Scientist in Residence has been playing a lot in the pandemic is Animal Crossing, in which bits of stars fall along the beach. It got Regina thinking — what ARE shooting stars? For answers on all things asteroid, meteoroid and comet, she turns to planetary scientist Melissa Rice.

Haven't had any luck Googling to learning more about a cool phenomenon? Shoot us an email shortwave@npr.org, and we'll dig up some answers.

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