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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Warming Puts Squeeze on Ancient Trees
17/09/2017 Duração: 02minAs temperatures rise, the tree line moves upslope. But ancient bristlecone pines are losing that upslope race to faster-colonizing neighbors. Christopher Intagliata reports.
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Rising CO2 Pushes Plants to Drink Sparingly
16/09/2017 Duração: 02minAs carbon dioxide levels rise, plants are sipping water more efficiently—which could come in handy in a drier future. Christopher Intagliata reports.
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Cannibalism Quells Contagion among Caterpillars
12/09/2017 Duração: 02minCannibalistic caterpillars prevent disease from decimating their populations by removing infected individuals. Emily Schwing reports.
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Feds Want to Know Who's Protesting Trump
11/09/2017 Duração: 03minInternet hosting company DreamHost is battling the U.S. Justice Department over requests for information about people visiting a Web site for organizing protests. Larry Greenemeier reports. Learn more about your ad choices. Visit megaphone.fm/adchoices
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Windows Vex Bats' Echolocating Abilities
07/09/2017 Duração: 02minSmooth vertical surfaces like windows reflect sound waves away from bats—meaning bats can't "see" windows and similar obstacles with echolocation. Christopher Intagliata reports.
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Wetlands Could Save Cities--and Money, Too
06/09/2017 Duração: 03minUsing insurance industry models, researchers determined that wetlands prevented some $625 million in damages due to Hurricane Sandy. Christopher Intagliata reports. Learn more about your ad choices. Visit megaphone.fm/adchoices
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Rabbit Relatives Reel from Climate Change
02/09/2017 Duração: 03minPikas, a hampster-size rabbit relative, have disappeared from a 64-square-mile plot in the northern Sierra Nevada—and climate change is a likely culprit. Christopher Intagliata reports. Learn more about your ad choices. Visit megaphone.fm/adchoices
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Winking Star 6 Centuries Ago Explained
01/09/2017 Duração: 04minA star that appeared and then vanished in A.D. 1437 was an explosion in a binary star system—which now reveals clues about the life cycle of certain stars. Christopher Intagliata reports. Learn more about your ad choices. Visit megaphone.fm/adchoices
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Grazing Cattle Trim the Menu for Birds
30/08/2017 Duração: 02minWhen cattle graze the desert's natural landscape, birds face changes in food availability—and some species are unable to adapt. Jason Goldman reports.
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Climate Change Might Shrink Fish
29/08/2017 Duração: 01minWarmer water boosts fishes' demand for oxygen—and their bodies may shrink in response. Christopher Intagliata reports.
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A Fruitful Experiment in Land Conservation
25/08/2017 Duração: 03minIn 1998 an orange juice maker dumped 12,000 tons of orange peels on degraded pastureland in Costa Rica—transforming it into vine-rich jungle. Christopher Intagliata reports. Learn more about your ad choices. Visit megaphone.fm/adchoices
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Recycle Your Eclipse Glasses
23/08/2017 Duração: 01minAstronomers Without Borders wants to share your used eclipse glasses with kids in other parts of the world for the 2019 total solar eclipse.
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Seeing 1 Solar Eclipse May Not Be Enough
19/08/2017 Duração: 02minDavid Baron, author of the new book American Eclipse, talks about how seeing his first total solar eclipse turned him into an eclipse chaser.
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Solar Eclipse in 1097 May Be Rock-Carving Subject
18/08/2017 Duração: 03minA petroglyph spotted in Chaco Canyon may depict a total solar eclipse witnessed by the Pueblo people. Learn more about your ad choices. Visit megaphone.fm/adchoices
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Social Media Sites Can Profile Your Contacts
17/08/2017 Duração: 02minWhy you should think twice before you give an app access to your phone’s address book.
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"Textalyzer" Aims at Deadly Distracted Driving
14/08/2017 Duração: 03minA new device promises to tell police when a driver has been sending messages while behind the wheel, but is it legal? Larry Greenemeier reports. Learn more about your ad choices. Visit megaphone.fm/adchoices
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Climate Change Fires Up Polar Bear Treadmill
10/08/2017 Duração: 02minSea ice is drifting faster in the Arctic—which means polar bears need to walk farther to stay in their native range. Emily Schwing reports.
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No Bull: Lizards Flee When They See Red
09/08/2017 Duração: 02minWestern fence lizards are more spooked by red and gray shirts than they are by blue ones—perhaps because the males have blue bellies themselves. Christopher Intagliata reports.
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Celebrities Tweet Like Bots
05/08/2017 Duração: 02minCelebrity Twitter accounts look a lot like Twitter bots: They tweet regularly, follow relatively few people, and upload a lot of content. Christopher Intagliata reports.
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Cold Snap Shapes Lizard Survivors
03/08/2017 Duração: 03minAn epic bout of cold weather quickly altered a population of lizards—an example of natural selection in action. Christopher Intagliata reports.