CrowdScience listeners come in all shapes, sizes and ages. This episode is dedicated to our younger listeners who, as we’ve learned before, are experts at asking those superficially obvious questions that for parents, are anything but easy to answer. To start off with, Sylvia, asks why elephants are so big? As we hear from our expert – mammals were at one time, much larger – so perhaps the question should be, why aren’t they bigger? We investigate what drives body size in the animal kingdom.
Presenter Marnie Chesterton, together with our ‘cub’ reporter Arlo, goes in search of the most brilliant scientific minds to respond to a slew of other queries. Shambhavi, from Singapore wonders why humans have five digits on each hand? And Benni from California asks why dogs don’t get sick when they drink from muddy puddles? Do dogs have some amazing ability to fight off viruses and bugs?
Beyond the confines of our planet, we’ve also got a question from Olivia, from Sydney, Australia, who regularly contemplates the universe: what is the biggest object in it she wonders? Marnie and her experts do their best to solve these mysteries.
Presented by Marnie Chesterton, produced by Dom Byrne for the BBC World Service.
Image: Getty Images
President Trump announced his intention to withdraw from the landmark Paris climate agreement in 2017 and formally notified the United Nations last year. A mandatory yearlong waiting period ended on Wednesday. Of the nearly 200 nations that signed the agreement, the U.S. is the only one to walk away from its promises to reduce greenhouse gas emissions. NPR science reporter Rebecca Hersher shares fives things to know.
All the farmed mink in Denmark are to be killed. Around 17 million. This is because they have SARS COV-2 coronavirus circulating among them and some humans have contracted a new strain from the animals. The scientific detail is sketchy, but Emma Hodcroft at Basel University pieces together a picture of what this means for tackling the virus.
Typhoon Goni and hurricane Eta are two very powerful tropical cyclones. But the way these storms are recorded differs by geographical location and recording style. We speak with Kerry Emanuel, a professor at MIT in Boston, USA.
The magnitude 7 earthquake that hit the Mediterranean last Friday (30/10/20) was 70 miles away from the city of Izmir, but despite this, there was devastating loss of life due to collapsed buildings. Earthquake engineer Eser Çaktı from the Turkish University of Boğaziçi, and Tiziana Rossetto from University College London talk us through the damage.
Migratory arctic animals are a weathervane for how the world is coping with climate change. Scientists have now pulled together monitoring data for these species’ movements into one accessible bank. Sarah Davidson tells us how this can help us understand the impact of Arctic climate change.
Throughout the U.S., the pandemic is still raging. And with cooler weather and the height of flu season ahead, an already dire situation could get much, much worse. On today's show, a pandemic reality check. Short Wave's Maddie Sofia and Emily Kwong talk about how we got here and how we should all be thinking about the holidays and the coming winter.
A NASA spacecraft sent out to collect a sample of rock and dust from an asteroid has nabbed so much that it's created an unexpected problem. NPR science correspondent Nell Greenfieldboyce shares a cautionary tale of a scientific mission that was almost too successful.
There’s an intuitive attraction to the idea that if we could just spend some quality time with someone from another group, we’d both come to appreciate, and maybe even like, the other person and perhaps even their group. Enormously simplified, that’s the basis of contact theory, which Gordon Allport posited in the 1950s as the United States grappled with desegregating its public schools.
If differing groups could be brought together cooperatively – not competitively – in a manner endorsed by both groups and where each side met on an equal footing, perhaps we could, as Salma Mousa puts it in this Social Science Bites podcast, “unlock tolerance on both sides and reduce prejudice.”
Mousa, currently a postdoctoral research fellow at Stanford University’s Department of Political Science, tells interviewer David Edmonds that since Allport’s heyday, “We have [had] a lot of studies about contact, but we need experimental tests of contact.” She’s been working to address that need, sometimes using the football pitch as a field site, with work that’s caught both the public and the scientific imagination.
One experiment she was part of examined the incidence of hate crimes once Mohamed “Mo” Salah, the talented Egyptian soccer star, signed with Liverpool Football Club. The results were heartening; Merseyside, where the club is located, experienced a 16 percent drop in hate crimes while anti-Muslim tweets from Liverpool’s fans dropped to half the number compared to fans of other Premier League clubs.
In this interview, Mousa details another experiment involving football and otherness, albeit an experiment made under harsher conditions: “We set out to learn if positive, social contact across social lines can reduce prejudice, can build friendships, can overall improve relationships between groups even in postwar settings, like Iraq.”
The experiment was conducted along the faultlines of northern Iraq where there’s a Kurdish enclave. Working with a Christian community organization which was helping Christians and Muslims displaced by ISIS, the researchers recruited Christian amateur soccer players for a football league. They then added three or four players to each team, randomly adding either all Muslims or all Christians as the newcomers, and tracked player attitudes and actions on the field and off for a half year after the season ended.
Amid some “really profound friendships” that formed, survey results and observed behavior showed that the Christian players came to be much more accepting and welcoming of their Muslim teammates. But that warming did not make the leap to their attitudes towards Muslims in general, suggesting some underlying prejudices remained in place.
While her promising findings nonetheless were not the “home run” people of good will would have liked, the research earned the cover of the journal Science, and left Mousa feeling optimistic about further possibilities of contact theory. Given the difficult context of postwar Iraq and subjects scarred by their flight from ISIS, “to find some evidence that these guys actually became friends and we changed something in these communities, I think is positive, especially given that these communities are persecuted and highly distrustful.”
Fostering tolerance and eroding prejudice, especially in the Middle East, matters personally to Mousa, an Egyptian-Canadian who grew up in Saudi Arabia, the United Arab Emirates, Qatar and Canada. She’s focused on helping “fix” the region’s ethnic and religious divides: “I think of myself as an engineer but with a social science background.”
Mousa has held fellowships at the U.S. Institute of Peace, Stanford’s Immigration Policy Lab, the Freeman Spogli Institute, the Stanford Center for International Conflict and Negotiation, the McCoy Center for Ethics in Society, and the Stanford Center on Philanthropy and Civil Society. Her work has been supported by the Abdul Latif Jameel Poverty Action Lab, the Innovations for Poverty Action Lab, the King Center on Global Development, the Institute for Research in the Social Sciences, the Program on Governance and Local Development, and the Abbasi Program in Islamic Studies.
What happens after a whale dies? Their carcasses, known as "whale falls," provide a sudden, concentrated food source for organisms in the deep sea. Biologist Diva Amon is our guide through whale-fall ecosystems and the unique species that exist on these fallen whales. (Encore Episode.)
Last week NASA’s Osiris-Rex mission successfully touched down on asteroid Bennu’s crumbly surface. But the spacecraft collected so much material that the canister wouldn’t close. NASA systems engineer Estelle Church tells Roland Pease how she and the team back on Earth performed clever manoeuvres to remotely successfully shut the lid.
As winter draws on in the North, and people spend more time indoors, there’s considerable debate about the conditions in which SARS-Cov2 is more likely to spread. Princeton University’s Dylan Morris has just published research exploring the coronavirus’s survival in different humidities and temperatures.
Indian agriculture in some areas uses vast amounts of water. Dr Vimal Mishra of the Indian Institute of Technology in Gandhinagar has discovered that this irrigation, plus very high temperatures, is causing not just extreme discomfort amongst the population but also more deaths.
In the 1930s serious dust storms over several years ruined crops and lives over a huge part of Midwest America. The dustbowl conditions were made famous by the folk songs of Woodie Guthrie and in John Steinbeck’s novel Grapes of Wrath. Now a study in Geophysical Research Letters suggests that levels of dust have doubled in the past twenty years. Roland Pease asks researchers and farmers if they think the dust bowl is returning.
We’ve probably all got a friend who sings along wildly out of tune - or maybe you are that person. But why are some of us apparently tone deaf, while others can hold a melody? Can you train yourself to sing in tune, or is it mostly down to raw talent?
These musical questions, from CrowdScience listeners Jenny and Anastasia, certainly struck a chord with us. Anastasia loves to sing but her friends tell her she’s off-key - or that “a bear trod on her ear,” as they say in her native Russia. Is it possible for her to improve her singing voice, and what are the best ways of going about it?
Both musicians and scientists help us tackle these questions, and explain what’s going on in our ears, brains and throats when we try to sing the right notes. We learn about congenital amusia, a condition which makes it almost impossible to tell if you’re in tune or not, and attempt to tease out the relative influence of our genes and our environment when it comes to musical ability.
We’ve probably all got a friend who sings along wildly out of tune - or maybe you are that person. But why are some of us apparently tone deaf, while others can hold a melody? Can you train yourself to sing in tune, or is it mostly down to raw talent?
These musical questions, from CrowdScience listeners Jenny and Anastasia, certainly struck a chord with us. Anastasia loves to sing but her friends tell her she’s off-key - or that “a bear trod on her ear,” as they say in her native Russia. Is it possible for her to improve her singing voice, and what are the best ways of going about it?
Both musicians and scientists help us tackle these questions, and explain what’s going on in our ears, brains and throats when we try to sing the right notes. We learn about congenital amusia, a condition which makes it almost impossible to tell if you’re in tune or not, and attempt to tease out the relative influence of our genes and our environment when it comes to musical ability.
Presented by Marijke Peters and produced by Cathy Edwards for the BBC World Service.
This year, there will be a "blue moon" for Halloween. So for today's show, we're asking: What IS a blue moon? Is the moon ever blue? And are they as rare as the phrase "once in a blue moon" implies?
Follow Maddie and Rebecca on Twitter for more science nuggets. Maddie's @maddie_sofia and Rebecca's @rebeccalramirez. Email the show your celestial musings and inquiries. We're at shortwave@npr.org.
