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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Pulling the String on Yo-Yo Weight Gain
18/03/2017 Duração: 02minMice that lost weight and then gained back more than they lost maintained an obesity-type microbiome that affected biochemicals involved in either burning or adding fat--suggesting interventions.
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Poverty Shaves Years off Life
17/03/2017 Duração: 03minA meta-analysis found that being of low socioeconomic status was associated with almost as many years of lost life as was a sedentary lifestyle. Learn more about your ad choices. Visit megaphone.fm/adchoices
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Pollinators Shape Plants to Their Preference
16/03/2017 Duração: 01minIn fewer than a dozen generations bumblebee-pollinated plants were coaxed to develop traits that made them even more pleasing to the bees. Christopher Intagliata reports.
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Low Biodiversity Brings Earlier Bloom
15/03/2017 Duração: 01minFor every two species lost in a grassland, the remaining flowers there bloomed a day earlier—on par with changes due to rising global temperatures. Christopher Intagliata reports.
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Early-Life Microbes Ward Off Asthma
14/03/2017 Duração: 03minExposure to specific microbes when an infant is less than a year old seems to have a protective effect against the child's eventual acquisition of asthma. Learn more about your ad choices. Visit megaphone.fm/adchoices
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(Probably Not a) Giant Alien Antenna
12/03/2017 Duração: 03minAstrophysicists propose that mysterious "fast radio bursts" could, in very speculative theory, be produced by an antenna twice the size of Earth. Christopher Intagliata reports. Learn more about your ad choices. Visit megaphone.fm/adchoices
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Jupiter Moon to Be Searched for Life
10/03/2017 Duração: 02minIf anything's alive on the ice-covered ocean world of Europa, a future NASA mission hopes to find it.
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Teeth Hint at a Friendlier Neandertal
08/03/2017 Duração: 02minBy sequencing DNA in Neandertal dental plaque, scientists were able to find out about their diets—and their good relations with modern humans. Christopher Intagliata reports.
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Forensic Science: Trials with Errors
07/03/2017 Duração: 02minWhat appears to be accepted science in the courtroom may not be accepted science among scientists.
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How to Find Loooong Gravitational Waves
06/03/2017 Duração: 02minThe gravitational waves found last year were short compared with the monster waves that could be turned up by what's called Pulsar Timing Arrays.
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Biggest Rivers Are Overhead
03/03/2017 Duração: 01minAtmospheric rivers can carry the same amount of water vapor as 15 to 20 Mississippi Rivers—and deliver punishing winds, too. Christopher Intagliata reports.
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Last Woollies Had Mammoth Mutations
02/03/2017 Duração: 02minThe final holdout woolly mammoths had large numbers of harmful mutations—which would have given them satiny coats and a weakened sense of smell. Christopher Intagliata reports.
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African Penguins Pulled into an Ecological Trap
01/03/2017 Duração: 03minClimate change and overfishing have made the penguins’ feeding grounds a mirage—which has led to a drop in penguin population. Jason G. Goldman reports. Learn more about your ad choices. Visit megaphone.fm/adchoices
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Neandertals Live On in Our Genomes
28/02/2017 Duração: 02minResearchers found that Neandertal gene variants still affect the way genes are turned off and on in modern humans. Christopher Intagliata reports.
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Medical Marijuana Faces Fed's Catch-22
27/02/2017 Duração: 03minDoing large studies of marijuana's potential as medicine means getting it removed from an official federal list of substances with no official medical use—which requires more proof of its potential as medicine. Learn more about your ad choices. Visit megaphone.fm/adchoices
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Blood Cells Remember Your Mountain Vacation
23/02/2017 Duração: 02minRed blood cells retain a memory of high-altitude exposure, allowing for faster acclimation next time. But that memory fades within four months. Christopher Intagliata reports. Learn more about your ad choices. Visit megaphone.fm/adchoices
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Fermented Foods Find Fervent Advocate
22/02/2017 Duração: 03minProperly fermented foods deliver probiotics that could help cut disease risk, said a researcher at the annual meeting of the AAAS. Learn more about your ad choices. Visit megaphone.fm/adchoices
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Vision Needed to Curb Nearsightedness Epidemic
21/02/2017 Duração: 03minIn urban Asian areas myopia among teenagers is topping 90 percent—but foresight may be able to bring those numbers way down. Learn more about your ad choices. Visit megaphone.fm/adchoices
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Guppy Groups Provide Friendly Protection against Foes
20/02/2017 Duração: 02minGuppies exposed to predators tend to aggregate into smaller, more tightly knit groups, which may allow them to coordinate their predator avoidance strategies. Jason G. Goldman reports.
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Spaceflight Squishes Spacefarers' Brains
18/02/2017 Duração: 01minAstronauts’ gray matter is compressed by time in space—except in an area that controls feeling and movement in the legs. Karen Hopkin reports.