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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Prehistoric Marine Reptile Died after a Giant Meal
21/08/2020 Duração: 02minResearchers found extra bones within a 240-million-year-old ichthyosaur fossil—which they determined to be the ichthyosaur’s last, possibly fatal meal. Christopher Intagliata reports.
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Cows with Eye Images Keep Predators in Arrears
19/08/2020 Duração: 04minButterflies, fish and frogs sport rear-end eyespots that reduce predation. Painting eye markings on cows similarly seems to ward off predators.
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Warbler Species Fires Up Song Diversity
18/08/2020 Duração: 03minHermit warblers in California have developed 35 different song dialects, apparently as a result of wildfires temporarily driving them out of certain areas.
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Why Lava Worlds Shine Brightly (It's Not the Lava)
12/08/2020 Duração: 02minScientists determined that “lava world” exoplanets do not derive their brightness from molten rock but possibly get it from reflective metallic clouds. Christopher Intagliata reports.
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Aardvarks Are Ailing amid Heat and Drought
11/08/2020 Duração: 03minClimate change is expected to bring more frequent droughts and heat waves to Africa’s Kalahari Desert. And aardvarks might not be able to cope. Jason G. Goldman reports.
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The World's Highest-Dwelling Mammal Lives atop a Volcano
07/08/2020 Duração: 02minScientists spotted a mouse at the summit of Llullaillaco, a 22,000-foot-tall volcano on the border of Chile and Argentina. Julia Rosen reports.
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Dampening of the Senses Is Linked to Dementia Risk
05/08/2020 Duração: 01minA decline in smell was the sense loss most strongly associated with such risk in a recent study. Christopher Intagliata reports.
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Translucent Frog Optics Create Camo Color
04/08/2020 Duração: 04minRather than undergoing active chameleonlike color changes, glass frogs’ translucency allows light to bounce from their background and go through them—making their apparent color close to their setting.
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Paired Comparisons Could Mean Better Witness Identifications
03/08/2020 Duração: 02minCompared with traditional lineup techniques, a series of two-faces-at-a-time choices led to more accurate identification by study witnesses.
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Foxes Have Dined on Our Leftovers for 30,000 Years
02/08/2020 Duração: 02minAn analysis of fox fossils found evidence that they scavenged from wolf and bear kills until Homo sapiens supplied plenty of horse and reindeer remains.
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Mexico Caves Reveal Ancient Ocher Mining
31/07/2020 Duração: 03minNow submerged caves in the Yucatán Peninsula contain remains of ocher-mining operations that date back at least 10,000 years.
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In Bee Shortage, Bubbles Could Help Pollinate
27/07/2020 Duração: 02minSoap bubbles are sticky enough to carry a pollen payload and delicate enough to land on flowers without harm.
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Science News Briefs from around the Planet
26/07/2020 Duração: 02minHere are some brief reports about science and technology from all over, including one about how a lizard population responded to hurricanes by developing larger and stickier toe pads on average.
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Seismologists Find the World Quieted Down during Pandemic Lockdowns
25/07/2020 Duração: 02minCOVID-19-related lockdowns dampened human activity around the globe—giving seismologists a rare glimpse of the earth’s quietest rumblings. Christopher Intagliata reports.
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Old Art Offers Agriculture Info
24/07/2020 Duração: 04minArt museums are filled with centuries-old paintings with details of plants that today give us clues about evolution and breeding practices.
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How COVID-19 Decreases Weather Forecast Accuracy
23/07/2020 Duração: 02minMeteorologists take advantage of weather data collected by commercial jetliners at different altitudes and locations. Fewer flights mean less data.
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Cricket Avoids Being Bat Food by Doing Nothing
22/07/2020 Duração: 03minThe sword-tailed cricket can discern bats’ echolocation signals by only responding to calls of a certain volume—at which point it plummets out of their approach.
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Speaker System Blocks City Noise
21/07/2020 Duração: 02minThe system works like noise-cancelling headphones but fits over an open window. Christopher Intagliata reports.
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Civil War Vaccine May Have Lessons for COVID-19
20/07/2020 Duração: 04minVaccination used against smallpox during the Civil War reveals the identity of the distantly related virus used to keep troops disease-free.
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Can People ID Infectious Disease by Cough and Sneeze Sounds?
16/07/2020 Duração: 02minIndividuals aren’t very good at judging whether someone coughing or sneezing has an infectious condition or is simply reacting to something benign.