Sinopsis
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
Episodios
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Sick Ants Seek Out Medicinal Food
27/08/2015 Duración: 03minHealthy ants wanted nothing to do with free-radical-rich foodstuff, but ants exposed to a pathogenic fungus sought it out, which upped their odds of survival. Christopher Intagliata reports Learn more about your ad choices. Visit megaphone.fm/adchoices
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Seaweed Bodyguards Coral against Bullying Sea Stars
26/08/2015 Duración: 03minCrown-of-thorns sea stars are an "underwater swarm of locusts" that devour coral—unless the coral is protected by a layer of seaweed. Christopher Intagliata reports Learn more about your ad choices. Visit megaphone.fm/adchoices
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Cosmetic Ads' Science Claims Lack Foundation
25/08/2015 Duración: 01minAn analysis of some 300 cosmetics ads in magazines found the vast majority of their science claims to be either false or too vague to judge
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Deep Voice Gives Politicians Electoral Boost
24/08/2015 Duración: 02minTwo new studies find that a deeper voice gives a politican an edge over a higher-pitched opponent
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Vomit Machine Models Cruise-Ship Virus Spread
22/08/2015 Duración: 04minUsing a simulated vomiting device, scientists determined that projectile vomiting can aerosolize noroviruslike particles, allowing the infection to spread short distances through the air. Christopher Intagliata reports Learn more about your ad choices. Visit megaphone.fm/adchoices
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Sunlight Activates Smog-Causing Chemicals in City Grime
20/08/2015 Duración: 03minThe grime on city buildings and may actively contribute to urban air pollution. Christopher Intagliata reports Learn more about your ad choices. Visit megaphone.fm/adchoices
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Methane-Eating Microbes May Mitigate Arctic Emissions
19/08/2015 Duración: 01minA newly discovered strain of bacteria found in Arctic permafrost harvests methane from the air—meaning it could help mitigate the effects of warming. Christopher Intagliata reports
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Chinese Cave Graffiti Agrees with Site's Drought Evidence
18/08/2015 Duración: 01minResearchers linked dated graffiti about droughts in a cave in China to physical evidence in the cave of the water shortages, such as changes in ratios of stable isotopes in specific layers of stalagmites
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Whistled Language Forces Brain to Modify Usual Processing
17/08/2015 Duración: 01minBoth hemispheres are involved in the brains of people interpreting a whistled variant of Turkish, compared with a left hemisphere dominance when listeners hear the spoken language
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Invertebrates Are Forgotten Victims of "Sixth Extinction"
14/08/2015 Duración: 03minSome 95 percent of catalogued species in one family of Hawaiian land snails could already be extinct, and similar rates of invertebrate extinction could be happening around the world. Christopher Intagliata reports Learn more about your ad choices. Visit megaphone.fm/adchoices
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Nicotine-Chomping Bacteria Could Help Smokers Quit
13/08/2015 Duración: 01minResearchers isolated a bacterial enzyme that could break down nicotine before smokers get the buzz that keeps them coming back for more. Christopher Intagliata reports
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Women Left out in Cold by Office A-C Standards
12/08/2015 Duración: 01minIndoor climate control systems are based on 1960s standards that envisioned the typical office worker to be a 40-year-old, 68-kilogram man
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Bite Me: The Mutation That Made Corn Kernels Consumable
11/08/2015 Duración: 01minA single-point mutation in corn's ancestor teosinte got rid of the hard shell that used to encase every kernel
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Fish Slime Inspires New Eco-Sunscreen Ingredient
07/08/2015 Duración: 01minResearchers have developed a new ecofriendly sunscreen molecule that protects against both UV-A and UV-B rays, and could also be used to create more durable paints and plastics. Christopher Intagliata reports
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Microbes Deep under Seafloor Reflect Ancient Land Origins
06/08/2015 Duración: 01minMicrobes 2,500 meters below the seafloor in Japan are most closely related to bacterial groups that thrive in forest soils on land, suggesting that they might be descendants of ones that survived when their terrestrial habitat was flooded 20 million years ago
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Spicy Food Linked to Lower Risk of Death
05/08/2015 Duración: 03minIn a study of nearly half a million volunteers in China, those who ate chilies just a couple times a week had a 10 percent lower risk of death. Christopher Intagliata reports Learn more about your ad choices. Visit megaphone.fm/adchoices
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Bonobo Peeps May Be Necessary Language Precursors
04/08/2015 Duración: 03minAnimal communication studies have shown only fixed vocalizations, such as alarm cries. But Bonobo chimps appear to have a call that has different meanings in different contexts Learn more about your ad choices. Visit megaphone.fm/adchoices
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Diminutive Peoples Took Different Paths to Petite
03/08/2015 Duración: 01minAdults of the west African Baka people and east African Efé and Sua peoples average less than five feet tall. But while the Efé and Sua are born small, the Baka have slow growth rates in infancy
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Forests Suck Up Less Carbon after Drought
31/07/2015 Duración: 03minTree growth lags below normal for several years following droughts, a detail about carbon sequestration that climate models currently overlook. Christopher Intagliata reports Learn more about your ad choices. Visit megaphone.fm/adchoices
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"Imperfect" Vaccines May Aid Survival of Ultrahot Viruses
30/07/2015 Duración: 03minCertain vaccines prevent sickness and death, but don't block transmission—meaning they may actually give some viral strains an extra shot at survival. Christopher Intagliata reports Learn more about your ad choices. Visit megaphone.fm/adchoices