CrowdScience - What is infinity?

Is there something bigger than infinity? Does quantum mechanics affect how I think? And why can I suddenly do algebra? As ever, we’re not afraid to tackle the big questions on CrowdScience. After a previous episode about the relationship between mathematics and reality, we received a flood of profound and difficult questions, so we dive back into the world of maths, physics and philosophy to try and answer them. A panel of experts help us puzzle out whether some infinities are bigger than others - and why that matters, as well as what quantum mechanics can teach us about the workings of the brain. And we seek answers for one of our listeners who surprised himself by being able to figure out mathematics equations he previously found unfathomable. With philosopher of physics Dr Eleanor Knox, mathematician Dr Katie Steckles, and Dr Aldo Faisal, an expert in neurotechnology.

Presented by Marnie Chesterton Produced by Cathy Edwards for the BBC World Service

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Short Wave - 2020 So Far: Fires, Floods, And Quakes

Already this year, natural disasters have wreaked havoc in Australia, Indonesia, and Puerto Rico. We look at some science behind the wildfires, floods, and earthquakes in those places with NPR reporters Rebecca Hersher and Jason Beaubien.

You can find more of Jason's reporting on Australia here and follow him on Twitter @jasonbnpr. Follow NPR's Adrian Florido on Twitter @adrianflorido and find his reporting from Puerto Rico here. Rebecca Hersher is @rhersher and here's her story about wildfire embers in Australia.

Follow host Maddie Sofia on Twitter @maddie_sofia. Email the show at shortwave@npr.org.

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Science In Action - Mount Taal volcano

An experimental satellite called Aeolus, named after a Greek god of wind, which takes daily global measurements of the wind patterns throughout the depth of atmosphere has improved weather forecasts. ESA’s Anne-Greta Straume explains how it works.

The dramatic eruption of the island volcano Taal in the Philippines was a spectacular picture of the plume of ejecta punching a hole in overlying cloud cover. Nearby towns have been blanketed with dust, fissures have appeared in the ground and there has been dramatic lightning. Geologist Yannick Withoos at Leicester University is studying historic eruptions of Taal and current events have brought the purpose of her research into sharp relief.

Philipp Heck of the Field Museum in Chicago explains how he has found the oldest dust grains on earth inside a Murchison meteorite. They are millions of years older than the solar system. And Roland Pease talks to Brian Rauch of Washington University, St ouis, who is currently in Antarctica flying detectors on balloons around the South Pole searcLhing for cosmic rays produced in the death of stars.

Tracking climate change in the Himalaya – not up at the snow capped peaks, clearly visible from afar, but in the extensive rocky hinterland further down you occasionally see in documentaries about attempts on Everest – is difficult. Ecologist and hydrologist Karen Anderson, of Exeter University, has used satellite data to measure the changes in the vegetation in this remote area.

(Image: Taal Volcano, Philippines. Credit: EPA)

Presenter: Roland Pease Producer: Julian Siddle

Short Wave - Can A 100-Year-Old Treatment Help Save Us From Superbugs?

In 2015, Steffanie Strathdee's husband nearly died from a superbug, an antibiotic resistant bacteria he contracted in Egypt. Desperate to save him, she reached out to the scientific community for help. What she got back? A 100-year-old treatment that's considered experimental in the U.S. Strathdee, an infectious disease epidemiologist, tells us how it works, its limitations, and its potential role in our fight against superbugs. Follow host Maddie Sofia on Twitter @maddie_sofia. Email the show at shortwave@npr.org.

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Short Wave - In Mozambique, Meteorologists Can’t Keep Up With Climate Change

Accurate weather forecasting can be a matter of life or death. So countries with less money like Mozambique face a big challenge. They can't build and maintain their own weather radar or satellites. Instead, they rely on weather maps created by wealthier countries, like the U.S. NPR climate reporter Becky Hersher tells us what that means for Mozambique, a country where the weather's gotten worse as the climate changes. Reach the show by emailing shortwave@npr.org.

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Short Wave - Your Brain On Storytelling

Storytelling can be a powerful tool to convey information, even in the world of science. It can also shift stereotypes about who scientists are. We talked to someone who knows all about this - Liz Neeley, the Executive Director of Story Collider, a nonprofit focused on telling "true, personal stories about science." You can tell us your personal science stories by emailing, shortwave@npr.org. Plus, do some #scicomm with Maddie on Twitter — she's @maddie_sofia.

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Short Wave - Space Junk: How Cluttered Is The Final Frontier?

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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Unexpected Elements - Australia’s extreme fire season

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)

CrowdScience - How low-carbon can CrowdScience go?

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

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CrowdScience - How does the sun affect my body and mind?

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)