Category: ScienceNews

In early August a cable snapped at the Arecibo Observatory in Puerto Rico, causing substantial damage to one of the largest single dish radio telescopes in the world. Planetary scientist Edgard Rivera-Valentín explains what's at stake until the damage is repaired and the unique role the telescope plays in both scientific research and popular culture.

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This week Science in Action examines the evidence around the Trump Administration’s emergency use authorisation of convalescent plasma therapy for the treatment of Covid-19. Donald Trump described its US-wide roll-out as ‘historic’ but the majority of scientists and doctors disagree, questioning the scientific basis for the government’s decision. Roland Pease talks to Mayo Clinic’s Michael Joyner, the leader of the convalescent plasma therapy study on which the action was based. The Mayo Clinic trial involved a large number of patients but none of them were compared to Covid-19 patients who were not treated with convalescent plasma. Trials that incorporate that comparison are the only way to properly assess the therapy’s effectiveness. Roland talks to Martin Landray of the University of Oxford who is testing convalescent plasma therapy in the UK’s Recovery randomised control trial, and to medical ethicist Alison Bateman-House of the New York University Grossman School of Medicine.

We also talk to nanotechnologist Marc Miskin about the million-strong army of microscopic robots he’s creating in his lab at the University of Pennsylvania.

Presenter: Roland Pease Producer: Andrew Luck Baker

(Main image: New York lab tests serum from recovered covid-19 patients for possible therapy. Credit: Misha Friedman / Getty Images)

Smoke from wildfires can travel huge distances. We've already seen smoke from the fires in California reach all the way to Minnesota. And with all that smoke comes possible risks to human health. So what actually is smoke? Jessica Gilman, an atmospheric chemist with the National Oceanic and Atmospheric Administration, explains what it's made of, how it behaves in the atmosphere, and smoke's role in climate change.

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On a rapidly changing planet, there are many ways to measure the health of an ecosystem. Can sound be one of them? We dive into a new methodology that applies machine learning technology to audio soundscape recordings. Lead researcher Sarab Sethi explains how this method could be used to potentially predict ecosystem health around the world.

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Encore episode. This one doesn't end the way you'd expect. Inspired by the Netflix documentary series "Night On Earth," we learn everything we can about a mouse and scorpion who do battle on the regular — from two scientists who study them: Ashlee Rowe at the University of Oklahoma and Lauren Esposito at the California Academy of Sciences.

If you have Netflix, you can watch the critters clash about 18 minutes into the episode 'Moonlit Plains' here.

Read more about Lauren's work with scorpions here, and Ashlee's work with grasshopper mice here. And you can learn more about grasshopper mouse vocalizations from Northern Arizona University's Bret Pasch here.

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Socializing is critical for mental and emotional health. You need it. We need it. But what's the safest way to socialize during a pandemic? We propose a few rules-of-thumb and suggestions to see you through, whether you're isolating at home or an essential worker on the job. Plus, check out Yuki Noguchi's reporting on cancer's deepening impacts during the pandemic.

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Has the loss from Greenland’s vast ice sheet reached a tipping point? According to glaciologist Michalea King, the rate at which its ice flows into the sea stepped up about 15 years ago. The process of glacial retreat is outpacing the accumulation snow and ice in Greenland’s interior and the loss of Greenland’s ice to the Ocean is set to continue for many years to come.

An international study of past climate changes during the last ice age reveals how fast changes to weather patterns and climate states can reverberate around the world. During the last ice age, when temperatures rose suddenly in Greenland a series of changes to the climate in Europe and the monsoons in Asia and South America occurred almost simultaneously - within decades of each other. Climate scientists Eric Wolff and Ellen Corrick have discovered this through studies of stalagmites from caves around the world. It’s a demonstration of how rapidly and dramatically the Earth’s atmospheric system can change when it’s perturbed.

Was the hottest temperature ever on Earth recorded last weekend? A weather station in Death Valley in California recorded a temperature of 54.4 degrees C. Roland Pease discusses the controversy with extreme weather historian Christopher Burt.

Andrea Dupree of Harvard-Smithsonian Center for Astrophysics reveals the latest on the giant star Betelgeuse which to everyone’s amazement dimmed dramatically at the beginning of the year. At the time some people wondered whether it was about to explode as a supernova but Andrea’s new findings suggest an event at the star which is almost as extraordinary.

If you’re one of the millions of people who used lockdown to try something new like baking sourdough bread, you may well be wondering what’s happening chemically inside your loaf, especially if the end result keeps changing. Well, you’re not alone. Listeners Soheil and Sean are both keen bakers but want to know more about the thing that makes bread rise: yeast. What is yeast? Where does it come from and can you catch it? And how hard is it to ‘make’ yourself? Soon after lockdown took effect, commercial supplies of the stuff disappeared from supermarket shelves across the globe.

The shortage also affected brewers the world over. A big fan of yeast in most of its forms, Marnie Chesterton took on the challenge of creating her own. She talks to the brewers who hunt rare strains to create the perfect beer, and hears from the biologist who says these amazing microbes, used for thousands of years, could be used to make food production more sustainable. And she discovers how this simple ingredient could be instrumental in the fight against climate change.

(Image: Masses of ice break off from the edge of a glacier. Credit: Press Association)

If you’re one of the millions of people who used lockdown to try something new like baking sourdough bread, you may well be wondering what’s happening chemically inside your loaf, especially if the end result keeps changing. Well, you’re not alone. Listeners Soheil and Sean are both keen bakers but want to know more about the thing that makes bread rise: yeast. What is yeast? Where does it come from and can you catch it? And how hard is it to ‘make’ yourself? Soon after lockdown took effect, commercial supplies of the stuff disappeared from supermarket shelves across the globe.

The shortage also affected brewers the world over. A big fan of yeast in most of its forms, Marnie Chesterton took on the challenge of creating her own. She talks to the brewers who hunt rare strains to create the perfect beer, and hears from the biologist who says these amazing microbes, used for thousands of years, could be used to make food production more sustainable. And she discovers how this simple ingredient could be instrumental in the fight against climate change. Presented by Marnie Chesterton and Produced by Marijke Peters for the BBC World Service.

The 2016 movie 'Arrival,' an adaptation of Ted Chiang's novella 'Story of Your Life,' captured the imaginations of science fiction fans worldwide. Field linguist Jessica Coon, who consulted on the film, breaks down what the movie gets right — and wrong — about linguistics.

Have ideas for our next installment of the Science Movie Club? Email the show at shortwave@npr.org.

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Has the loss from Greenland’s vast ice sheet reached a tipping point? According to glaciologist Michalea King, the rate at which its ice flows into the sea stepped up about 15 years ago. The process of glacial retreat is outpacing the accumulation snow and ice in Greenland’s interior and the loss of Greenland’s ice to the Ocean is set to continue for many years to come.

An international study of past climate changes during the last ice age reveals how fast changes to weather patterns and climate states can reverberate around the world. During the last ice age, when temperatures rose suddenly in Greenland a series of changes to the climate in Europe and the monsoons in Asia and South America occurred almost simultaneously - within decades of each other. Climate scientists Eric Wolff and Ellen Corrick have discovered this through studies of stalagmites from caves around the world. It’s a demonstration of how rapidly and dramatically the Earth’s atmospheric system can change when it’s perturbed.

Was the hottest temperature ever on Earth recorded last weekend? A weather station in Death Valley in California recorded a temperature of 54.4 degrees C. Roland Pease discusses the controversy with extreme weather historian Christopher Burt.

Andrea Dupree of Harvard-Smithsonian Center for Astrophysics reveals the latest on the giant star Betelgeuse which to everyone’s amazement dimmed dramatically at the beginning of the year. At the time some people wondered whether it was about to explode as a supernova but Andrea’s new findings suggest an event at the star which is almost as extraordinary.

(Image: Masses of ice break off from the edge of a glacier. Credit: Press Association)

Presenter: Roland Pease Producer: Andrew Luck-Baker