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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Short-Term Fasting Made Mice Healthier
17/12/2014 Duration: 01minMice that ate their entire food for the day in an eight-to-12-hour window had better markers for health than did mice free to eat whenever they wanted. Steve Mirsky reports
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Laser Zap Determines Fruit Ripeness
15/12/2014 Duration: 01minThe way fruit reflects and absorbs laser light may be a good measure of its progression toward peak ripeness. Christopher Intagliata reports
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Birds Roost on New Evolutionary Tree
11/12/2014 Duration: 03minIn a massive first-of-its-kind whole-genome analysis involving 48 bird species, researchers have created a new avian evolutionary tree. Steve Mirsky reports
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Canary out, Smartphone in for Gas Detection
11/12/2014 Duration: 01minBy using tiny carbon nanotubes tuned electronically to particular gases, researchers turned smartphones into toxin sensors. Cynthia Graber reports
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Quarter-Million Tons of Plastic Plague Oceans
10/12/2014 Duration: 01minBased on trawling samples and visual observations of plastic debris, computer models calculate that some 5.25 trillion particles of plastic—about 269,000 tons—may litter the world's oceans. Christopher Intagliata reports
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Dumpster Diving Provides Drinking Data
09/12/2014 Duration: 01minResearchers estimated alcohol consumption at a senior center by putting out recycling bins and counting the bottle contents. Karen Hopkin reports
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Summer Teen Jobs Cut Violence
08/12/2014 Duration: 01minA study following teens who had summer jobs found violent crime in that population almost cut in half, during and following the employment. Cynthia Graber reports
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Poorer Kids May Be Too Respectful at School
03/12/2014 Duration: 01minWorking-class kids ask for help from teachers less often and less aggressively than do their middle-class counterparts
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Big Apple's Insects Eat Streets Clean
02/12/2014 Duration: 02minResearchers working in New York City found that hungry urban arthropods help dispose of tons of edible trash. Allie Wilkinson reports Learn more about your ad choices. Visit megaphone.fm/adchoices
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Scientific American's 1930 Football Study Found Little Actual Action
26/11/2014 Duration: 02minThe Wall Street Journal found in 2010 that an NFL game has just 11 minutes of actual action. Eight decades earlier, Scientific American found just about the same thing
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Looking Back on 40 Years of Lucy
25/11/2014 Duration: 03minPaleoanthropologist Donald Johanson's first glimpse of Lucy came on November 24, 1974 Learn more about your ad choices. Visit megaphone.fm/adchoices
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Better Barley Let People Settle Tibetan Plateau
21/11/2014 Duration: 02minImportation of a frost-resistant barley from the Fertile Crescent to Tibet some 3,600 years ago is associated with the advent of settlements at 3,000 meters and more above sea level. Cynthia Graber reports Learn more about your ad choices. Visit megaphone.fm/adchoices
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Worse Than the Bite
20/11/2014 Duration: 02minA new study suggests bed bugs can transmit Chagas disease to mice—but the same thing is unlikely to happen in humans. Christopher Intagliata reports
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Semen Protects HIV from Microbicide Attack
14/11/2014 Duration: 01minMicrobicides that kill HIV in the lab often fail in clinical trials. A study finds that semen may be the culprit. Cynthia Graber reports
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Select Few Can Truly Drink to Their Health
14/11/2014 Duration: 02minAlcohol's supposed benefit to the heart may only be available to people with the right genes. Christopher Intagliata reports
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"We Are on the Comet!"
12/11/2014 Duration: 01minSome sounds from the Rosetta Mission team today after they succeeded in landing on Comet 67P/Churyumov–Gerasimenko. Steve Mirsky reports
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Microbiome Studies Contaminated by Sequencing Supplies
11/11/2014 Duration: 03minNonsterile lab reagents and DNA extraction kits add their own assortment of DNA to microbiome samples. Christopher Intagliata reports Learn more about your ad choices. Visit megaphone.fm/adchoices
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Young Earth May Have Been All Wet
10/11/2014 Duration: 01minBecause the chemical signature of water on Earth matches the signature of water in an ancient group of asteroids called eucrites, it means that Earth might have had water much earlier than previously thought. Julia Rosen reports
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Chimps Hit Sack with Breakfast Plans
07/11/2014 Duration: 01minChimps choose an overnight camp site based on the likelihood of finding calorically rich food nearby. Karen Hopkin reports
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Bats Jam Rivals’ Sonar to Steal a Meal
06/11/2014 Duration: 02minMexican free-tailed bats make calls that interfere with fellow bats’ echolocation, causing them to miss their insect targets. Christopher Intagliata reports