Category: ScienceNews

Since the dawn of Sputnik in 1957, space-faring nations have been filling Earth's orbit with satellites. Think GPS, weather forecasting, telecommunications satellites. But as those have increased, so, too, has space junk. On today's show, we talk about the first mission to clean up space junk and the problem debris poses to sustainability in space.

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2019 was Australia’s hottest year on record, a major factor behind the bush fires which have been far worse than usual. We look at the patterns of extreme weather that have contributed to the fires but are also linked to floods in Africa. And the way in which thunderstorms have helped to spread the fires.

The armpit of Orion is changing. The star Betelgeuse is dimming some claim this is readying it for a major explosion others are more sceptical, we weight up the arguments.

And an Iron Age brain may hold some clues to modern neurodegenerative disease. Protein fragments have been extracted from the brain tissue found inside a 2,500 year old human skull.

Reducing climate change and global warming is one of the biggest and most urgent challenges for everyone as we enter a new decade. The CrowdScience team have been trying to figure out how to play our part in reducing our carbon footprint. So what’s the best way forward?

Presenter Marnie Chesterton starts to find out by pitting three of her colleagues against each other for the first phase of our challenge. Anand Jagatia, Geoff Marsh and Melanie Brown have all been tasked with answering a listener’s question in the lowest-carbon way possible. Along the way, they must monitor and account for every emission – from their travel methods to their choice of sustenance whilst working. It turns out that the challenge is not only in acknowledging all the types of activity that produce emissions, but in working out the volume of greenhouse gases produced. Marnie judges her colleagues’ efforts, determines a winner, and dispatches the losing challenger to look further into carbon calculation, and to find out about the possibilities of legitimately offsetting the overall footprint. And we start our on-going experiment using a broadcast industry carbon calculator to find out the most carbon-efficient and sustainable ways to keep answering everyone’s questions and sharing more cutting-edge global science.

(Image: Australia fires. Credit: Getty Images)

Reducing climate change and global warming is one of the biggest and most urgent challenges for everyone as we enter a new decade. The CrowdScience team have been trying to figure out how to play our part in reducing our carbon footprint. So what’s the best way forward? Presenter Marnie Chesterton starts to find out by pitting three of her colleagues against each other for the first phase of our challenge. Anand Jagatia, Geoff Marsh and Melanie Brown have all been tasked with answering a listener’s question in the lowest-carbon way possible. Along the way, they must monitor and account for every emission – from their travel methods to their choice of sustenance whilst working. It turns out that the challenge is not only in acknowledging all the types of activity that produce emissions, but in working out the volume of greenhouse gases produced. Marnie judges her colleagues’ efforts, determines a winner, and dispatches the losing challenger to look further into carbon calculation, and to find out about the possibilities of legitimately offsetting the overall footprint. And we start our on-going experiment using a broadcast industry carbon calculator to find out the most carbon-efficient and sustainable ways to keep answering everyone’s questions and sharing more cutting-edge global science.

Presented by Marnie Chesterton Produced by Jen Whyntie for the BBC World Service

(Photo:

Two years ago reporter Anand Jagatia travelled up beyond the Arctic Circle to meet Norwegian researchers in order to answer a question from US listener Kira on why some people function best in the mornings whilst others only come alive at night. In this episode we revisit the topic with the help of science writer and Parentland podcast presenter Linda Geddes, author of Chasing the Sun, a book which explores the science behind the sun’s effects on our bodies and our minds.

The morning sun helps to kick-start our day and our body’s biological cycle – so what happens when it barely rises above the horizon or we live for prolonged periods in artificial environments where the sun never shines? Research has suggested that some communities in northern latitudes are better protected against the mental and physical effects of reduced exposure to sunlight in the winter which might have implications for those suffering the winter blues.

Presenter Anand Jagatia, Producer: Rami Tzabar

(Photo: Woman basking in the sun. Credit: Getty Images)

Host Maddie Sofia and reporter Emily Kwong evaluate what truth there is to the popular phrases "blind as a bat" and "memory of a goldfish." Hint: The phrases probably weren't born out of peer-reviewed science. Tweet Maddie at @maddie_sofia and Emily at @emilykwong1234. Plus, encourage our editor to make this a series by sending fan mail to shortwave@npr.org.

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2019 was Australia’s hottest year on record, a major factor behind the bush fires which have been far worse than usual. We look at the patterns of extreme weather that have contributed to the fires but are also linked to floods in Africa. And the way in which thunderstorms have helped to spread the fires.

The armpit of Orion is changing. The star Betelgeuse is dimming some claim this is readying it for a major explosion others are more sceptical, we weight up the arguments.

And an Iron Age brain may hold some clues to modern neurodegenerative disease. Protein fragments have been extracted from the brain tissue found inside a 2,500 year old human skull.

(Image: Australia fires. Credit: Getty Images)

Presenter: Roland Pease Producer: Julian Siddle

It's called silicosis, and it's been known about for decades. So why is it now emerging in new numbers among workers who cut kitchen countertops? NPR science correspondent Nell Greenfieldboyce explains. More of her original reporting on silicosis is here. Follow host Maddie Sofia on Twitter @maddie_sofia. Email the show at shortwave@npr.org.

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Biologist Lesley Hughes from Macquarie University in Australia explains why the recent bushfires there could change the country forever. Hughes is a former federal climate commissioner, and has been the lead author on two reports for the UN's Intergovernmental Panel on Climate Change. Follow host Maddie Sofia on Twitter @maddie_sofia. Email the show at shortwave@npr.org.

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With each new year comes a wave of good intentions as people aim to be better. They want to lose weight, exercise more, be nicer, drink less and smoke not at all. They want to change behavior, and as Susan Michie knows well, “behavior is related to absolutely everything in life.”

Michie is a clinical and health psychologist who leads the Centre for Behaviour Change at University College London. She specializes in behavior related to health – for behavior or health practitioners, patients and population as a whole – and in looking at how behavior impacts the natural environment. And while you might think that the essentials of human behavior are pretty similar, one of the things Michie quickly tells interviewer Dave Edmonds in this Social Science Bites podcast is that it can be unwise to jump to conclusions when studying behavior (or trying to change it).

She notes, for example, that lots of behavioral research is done in North America, where there’s relatively abundant funding for studies, “but the biggest need [for research] is often where there’s the least investment. There’s no point in developing an intervention based on research evidence conducted in parts of the world that are very far away from the type of context we want to implement the findings in – only to find out it’s not going to work.”

So yes, she says, do look at both the rigour of the research, but also base any potential application of the findings on deep understanding of local conditions and using local knowledge.

Michie and her team describe this using a model, COM B, to account for the ‘capability, ‘opportunity’ and ‘motivation’ necessary to change behavior.

Changing behaviors is important – “In order to solve any of these big social challenges we need people at different positions in society to change their behavior” -- so these considerations matter. But that begs the questions of what behaviors need changing – and who decides what those selected behaviors are..

“There’s a big issue about who decides what the key issues are,” Michie says. “But I think there are certain problems which are very self-evident – there are people dying unnecessarily as a result of smoking, obesity but also environmental conditions – poor housing, etc. There are areas where the social consensus is that things needs to change, and I’d say those are the ones we start with.”

In the interview, Michie also addresses the ethics of behavior change and how algorithms and machine learning will be “absolutely vital” to parse through all the relevant data . Her own Human Behaviour Change Project is a collaboration between behavioral scientists and computer scientists combing the global literature to see what works, with an initial focus on smoking cessation. A comprehensive tobacco control strategy, she details, involves those infamous “nudges” beloved of policy makers, but also the legislation, services and taxation, that need to work synergistically to effect real change.

Michie had a long career as a research fellow and clinician before joining the Psychology Department of University College London in 2002. She’s a fellow of the Academy of Medical Sciences, the Academy of Social Sciences, the Academy of Behavioral Medicine Research, the Society of Behavioral Medicine, the European Health Psychology Society, the British Psychological Society and a Distinguished International Affiliate of the American Psychological Association. 

Some dairy farmers in Massachusetts are using food waste and manure to create renewable energy. Each farm produces enough to power about 1,500 homes. Not only does this process create electricity, NPR Science Correspondent Allison Aubrey tells us it also prevents the release of methane, a greenhouse gas. Follow Short Wave's Emily Kwong on Twitter @emilykwong1234. Email the show at shortwave@npr.org.

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