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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Blue Whale Song Timing Reveals Time to Go
07/10/2020 Duração: 03minBlue whales off California’s coast sing at night—until it’s time to start migrating, and they switch to daytime song.
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New Nobel Laureate Talks Today's Virology
05/10/2020 Duração: 03minCharles Rice, who today shared the Nobel Prize in Physiology or Medicine for the discovery of the hepatitis C virus, talked about how rapidly research now occurs, compared with his early work.
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Greenland Is Melting Faster Than Any Time in Past 12,000 Years
03/10/2020 Duração: 03minResearchers determined that Greenland is on track to lose more ice this century than during any of the previous 120 centuries. Christopher Intagliata reports.
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Sloths Slowly Cavort by Day Now
02/10/2020 Duração: 03minThe disappearance of their predators in a disturbed ecosystem has turned Atlantic forest sloths from night creatures to day adventurers.
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Dinosaurs Got Cancer, Too
28/09/2020 Duração: 03minResearchers seeking evidence for cancer in dinosaurs found it in a collection of bones at a paleontology museum in Alberta.
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Fluttering Feathers Could Spawn New Species
24/09/2020 Duração: 02minFork-tailed flycatchers make a fluttering sound with their wings—but separate subspecies have different “dialects” of fluttering. Christopher Intagliata reports.
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Science News from around the World
22/09/2020 Duração: 03minHere are some brief reports about science and technology from all over, including one from Israel about what DNA reveals about the Dead Sea Scrolls’ parchment.
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These Small Mammals Snort to a Different Tune
17/09/2020 Duração: 04minHyraxes, which live in Africa and the Middle East, punctuate their songs with snorts. And the snorts appear to reflect the animals’ emotional state. Jason G. Goldman reports.
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Ice Age Temperatures Help Predict Future Warming
16/09/2020 Duração: 02minScientists determined that temperatures were 11 degrees cooler during the last ice age—and that finding has implications for modern-day warming. Julia Rosen reports.
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High-Elevation Hummingbirds Evolved a Temperature Trick
15/09/2020 Duração: 02minHummingbirds in the Peruvian Andes enter a state of torpor at night to conserve energy, dipping their body temperature to as low as 38 degrees Fahrenheit. Christopher Intagliata reports.
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Why Pet Pigs Are More like Wolves Than Dogs
14/09/2020 Duração: 03minGiven an impossible task, a dog will ask a human for help, but a wolf will not seek help—and neither will a pet pig.
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Bricks Can Be Turned into Batteries
10/09/2020 Duração: 02minPumping cheap iron-oxide-rich red bricks with specific vapors that form polymers enables the bricks to become electrical-charge-storage devices.
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Leftovers Are a Food-Waste Problem
09/09/2020 Duração: 02minResearchers found that leftovers are likely to end up in the trash, so they advise cooking smaller meals in the first place to avoid food waste. Christopher Intagliata reports.
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Some Dinosaurs Probably Nested in Arctic
08/09/2020 Duração: 03minThe finding of a baby dinosaur fossil in the Arctic implies that some dinos nested in the region, which was milder than today but not toasty.
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Star Systems Can Be Born Topsy-Turvy
03/09/2020 Duração: 02minAstronomers observed an odd triple-star system that offers clues about misaligned planetary orbits. Christopher Intagliata reports.
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Death by Lightning Is Common for Tropical Trees
02/09/2020 Duração: 02minA study estimates that 200 million trees in the tropics are mowed down by lightning annually.
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Science Briefs from around the World
31/08/2020 Duração: 03minHere are some brief reports about science and technology from all over, including one from Antarctica about how there’s something funny about penguin poop.
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Alaska's Salmon Are Shrinking
28/08/2020 Duração: 03minEvery year, Alaska’s big salmon runs feature smaller salmon. Climate change and competition with hatchery-raised salmon may be to blame. Julia Rosen reports.
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End of 'Green Sahara' May Have Spurred a Megadrought in Southeast Asia
27/08/2020 Duração: 02minThat drought may have brought about societal shifts in the region 5,000 years ago. Christopher Intagliata reports.
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White Rhinos Eavesdrop to Know Who's Who
26/08/2020 Duração: 03minThe finding could potentially help wildlife managers keep better tabs on their herds. Jason G. Goldman reports.