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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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.
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Why Some Birds Are Likely To Hit Buildings
13/07/2020 Duração: 03minThose that eat insects, migrate or usually live in the woods are most likely to fly into buildings that feature a lot of glass.
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Sparrow Song Undergoes Key Change
11/07/2020 Duração: 04minWhite-throated sparrows made a change to their familiar call that quickly spread across Canada.
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Polynesians and Native South Americans Made 12th-Century Contact
09/07/2020 Duração: 03minScientists have found snippets of Native South American DNA in the genomes of present-day Polynesians, and they trace the contact to the year 1150. Christopher Intagliata reports.
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Animals Appreciate Recent Traffic Lull
08/07/2020 Duração: 02minResearchers saw a third fewer vehicle collisions with deer, elk, moose and other large mammals in the four weeks following COVID-19 shutdowns in three states they tracked.
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Bat Says Hi as It Hunts
07/07/2020 Duração: 02minVelvety free-tailed bats produce sounds that help them locate insect prey but simultaneously identify them to their companions.
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Forests Getting Younger and Shorter
06/07/2020 Duração: 02minOld, big trees are dying faster than in the past, leaving younger, less biodiverse forests that store less carbon worldwide.
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Young Great White Sharks Eat off the Floor
02/07/2020 Duração: 02minThe stomach contents of young great white sharks show that they spend a lot of time patrolling the seafloor for meals.
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Tweets Reveal Politics of COVID-19
01/07/2020 Duração: 02minPolitical scientists analyzed congressional tweets and observed how Republicans and Democrats responded differently to the virus. Christopher Intagliata reports.