Sinopse
Leading science journalists provide a daily minute commentary on some of the most interesting developments in the world of science. For a full-length, weekly podcast you can subscribe to Science Talk: The Podcast of Scientific American . To view all of our archived podcasts please go to www.scientificamerican.com/podcast
Episódios
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How Herbivore Herds Might Help Permafrost
17/04/2020 Duração: 03minIntroducing herds of large herbivores in the Arctic would disturb surface snow, allowing cold air to reach the ground and keep the permafrost frosty.
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Lung Cancer Screen Could Be Easy Pee-sy
15/04/2020 Duração: 03minIn mice, a test for lung cancer involves nanoprobes that recognize tumors and send reporter molecules into the urine for simple analysis.
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Obama Talks Some Science Policy
14/04/2020 Duração: 01minAs he endorsed Joe Biden today, former president Barack Obama touched on some environmental, economic and science matters.
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Red-Winged Blackbirds Understand Yellow Warbler Alarms
13/04/2020 Duração: 04minResearchers studying yellow warbler responses to the parasitic cowbird realized that red-winged blackbirds were eavesdropping on the calls and reacting to them, too.
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Waiter, What's This Worm Doing in My Sushi?
10/04/2020 Duração: 02minWell, it’s probably there because the odds on its presence have gone way up in the past 40 years. But such parasites are still much more of a health problem for whales and dolphins than they are for us.
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What's a Narwhal's Tusk For?
09/04/2020 Duração: 02minAlthough the tusk can be a weapon, the variation in tusk length among animals of similar body size points to it being primarily a mating status signal.
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Coronavirus Misinformation Is Its Own Deadly Condition
07/04/2020 Duração: 02minPulitzer-winning Laurie Garrett, author of The Coming Plague: Newly Emerging Diseases in a World Out of Balance, talks about the dangers of politicians offering coronavirus misinformation.
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Coronavirus Can Infect Cats
06/04/2020 Duração: 03minTigers and lions at the Bronx Zoo have tested positive for the virus, and studies show that house cats—but apparently not dogs—can become infected.
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Squid's Glowing Skin Patterns May Be Code
02/04/2020 Duração: 02minHumboldt squid can rapidly change the pigmentation and luminescence patterns on their skin by contracting and relaxing their muscles, possibly to communicate.
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Bird Fossil Shared Earth with T. rex
01/04/2020 Duração: 02minDating back 67 million years, this representative of the group of modern birds has been dubbed the Wonderchicken (which is not an April Fools’ Day joke).
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City Birds: Big-Brained with Few Offspring or Small-Brained with a Lot
31/03/2020 Duração: 04minTo make it in urban areas, birds tend to be either large-brained and able to produce few offspring or small-brained and extremely fertile. In natural habitats, most birds brains are of average size.
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Coyotes Eat Everything from Fruits to Cats
30/03/2020 Duração: 03minThe diets of coyotes vary widely, depending on whether they live in rural, suburban or urban environments—but pretty much anything is fair game.
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Tiny Wormlike Creature May Be Our Oldest Known Ancestor
29/03/2020 Duração: 02minThe bilateral organism crawled on the seafloor, taking in organic matter at one end and dumping the remains out the other some 555 million years ago.
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Science News Briefs from around the Planet
28/03/2020 Duração: 02minHere are a few brief reports about science and technology from around the planet, including one about the discovery of an intact chicken egg dating to Roman Britain.
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Help Researchers Track COVID-19
26/03/2020 Duração: 02minBy entering your health status, even if you’re feeling fine, at the Web site COVID Near You, you can help researchers develop a nationwide look at where hotspots of coronavirus are occurring.
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Sick Vampire Bats Restrict Grooming to Close Family
25/03/2020 Duração: 02minWhen vampire bats feel sick, they still engage in prosocial acts such as sharing food with nonrelatives. But they cut back on grooming anyone other than their closest kin.
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Exponential Infection Increases Are Deadly Serious
24/03/2020 Duração: 05minListen in as I use two calculators to track the difference in numbers of infections over a short period of time, depending on how many people each infected individual infects on average.
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Swamp Wallaby Reproduction Give Tribbles a Run
21/03/2020 Duração: 03minThey’re not born pregnant like tribbles, but swamp wallabies routinely get pregnant while pregnant.
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Ocean Plastic Smells Great to Sea Turtles
19/03/2020 Duração: 02minOcean plastic gets covered with algae and other marine organisms, making it smell delicious to sea turtles—with potentially deadly results.
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Ancient Clam Shell Reveals Shorter Day Length
17/03/2020 Duração: 03minThe growth layers in a 70-million-year-old clam shell indicate that a year back then had more than 370 days, with each day being only about 23.5 hours.