Synopsis
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
Episodes
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Alaska Accelerates Indoor Agriculture
04/06/2017 Duration: 03minWith 700 new greenhouses, Alaska is growing its own produce as deep into winter as the sun keeps rising. Learn more about your ad choices. Visit megaphone.fm/adchoices
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Chromosomes Combat Counterfeit Caviar
03/06/2017 Duration: 01minResearchers found unique genetic variants that differentiate costly beluga caviar from cheaper fakes that rip off consumers. Christopher Intagliata reports.
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French Prez Invites Trumped Researchers
02/06/2017 Duration: 02minNew French president, Emmanual Macron, reacted to the U.S. withdrawal from the Paris climate agreement by inviting disaffected U.S. researchers to make France "a second homeland."
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Trees Beat Lawns for Water-Hungry L.A.
27/05/2017 Duration: 02minEvaporation from overwatered lawns cost the city of Los Angeles 70 billion gallons of wasted water a year. But the city's trees were much thriftier. Christopher Intagliata reports.
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Former CDC Head Warns of Threats Biological and Political
26/05/2017 Duration: 01minTom Frieden, head of the CDC from 2009 to 2017, told graduating medical students that we face challenges from pathogens, and from politicians.
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Fitness Bands Fail on Calorie Counts
24/05/2017 Duration: 01minActivity trackers accurately reckon heart rate—but they're way off in estimates of energy expenditure. Christopher Intagliata reports.
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New Concrete Recipes Could Cut Cracks
19/05/2017 Duration: 02minRecipes for concrete that incorporate by-products from the coal and steel industries, like fly ash and slag, could reduce road salt–related cracking. Christopher Intagliata reports.
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Bees Prefer Flowers That Proffer Nicotine
17/05/2017 Duration: 02minBumblebees sought out flowers with nicotine in their nectar, and the drug appeared to enhance the bees' memories. Christopher Intagliata reports. Learn more about your ad choices. Visit megaphone.fm/adchoices
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Large Impacts May Cause Volcanic Eruptions
16/05/2017 Duration: 04minReally big meteorite or asteroid strikes may cause melting and deep deformations that eventually lead to volcanic eruptions. Learn more about your ad choices. Visit megaphone.fm/adchoices
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Why the Cross Put Chickens on a New Road
15/05/2017 Duration: 03minA religiously inspired change in the European diet about a thousand years ago led to the development of the modern domesticated chicken.
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Field Study: Worms Leave 'Til No-Till
12/05/2017 Duration: 02minEarthworm numbers doubled in fields after farmers switched from conventional plowing to no-till agriculture. Christopher Intagliata reports.
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The Sneaky Danger of Space Dust
11/05/2017 Duration: 03minWhen tiny particles of space debris slam into satellites, the collision could cause the emission of hardware-frying radiation. Christopher Intagliata reports. Learn more about your ad choices. Visit megaphone.fm/adchoices
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Insects Donate DNA to Unrelated Bugs
10/05/2017 Duration: 01minBacteria swap DNA among themselves. And that process may be more common in multicellular organisms than previously believed. Christopher Intagliata reports.
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Gophers versus the Volcano
09/05/2017 Duration: 02minPocket gophers survived the Mount Saint Helens eruption in their underground burrows and immediately went to work bringing back the ecosystem.
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Wilderness Areas Suffer from Human Sound
07/05/2017 Duration: 02minHuman-produced noise doubles the background sound levels in 63 percent of protected areas, and raises it tenfold in 21 percent of such landscapes.
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Pollution Peaks When Temperatures Top Out
03/05/2017 Duration: 03minAs temperatures rise, energy demands peak, with a corresponding increase in air pollutants. Christopher Intagliata reports. Learn more about your ad choices. Visit megaphone.fm/adchoices
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Hot Chilies Cool Down Gut Inflammation in Mice
02/05/2017 Duration: 02minThe spicy compound in chilies kicks off a chemical cascade that reduces gut inflammation and immune activity in mice. Christopher Intagliata reports.
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Bronx River's Cleanup Brings Herring Home
01/05/2017 Duration: 02minCalled an "open sewer" in the recent past, the Bronx River is now clean enough for a type of herring to once again be introduced and to make runs to the ocean.
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Ancient Human DNA Found in Cave Dirt
28/04/2017 Duration: 01minScientists uncovered genetic traces of Neandertals and Denisovans by screening cave dirt for DNA. Christopher Intagliata reports.
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Gut Microbes Help Keep Starved Flies Fecund
26/04/2017 Duration: 02minMicrobes living in the guts of fruit flies appear to influence the flies' food choice—and promote egg production, even under a nutrient-poor diet. Christopher Intagliata reports.