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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How COVID-19 Decreases Weather Forecast Accuracy
23/07/2020 Duración: 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 Duración: 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 Duración: 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 Duración: 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 Duración: 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 Duración: 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 Duración: 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 Duración: 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 Duración: 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 Duración: 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 Duración: 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 Duración: 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 Duración: 02minPolitical scientists analyzed congressional tweets and observed how Republicans and Democrats responded differently to the virus. Christopher Intagliata reports.
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Nature's Goods and Services Get Priced
30/06/2020 Duración: 03minThe gross ecosystem product, or GEP, tries to take into account the contribution of nature to the economy.
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Animal Migrations Track Climate Change
29/06/2020 Duración: 02minMany species are known to have changed their migration routes in response to the changing climate. They now include mule deer and Bewick’s swans.
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Science Briefs from around the World
24/06/2020 Duración: 01minHere are some brief reports about science and technology from around the planet, including one about a 70-million-year-old mollusk fossil that reveals years back then had a few more days than we have now.
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Stiffer Roads Could Drive Down Carbon Emissions
19/06/2020 Duración: 02minBy hardening the nation’s streets and highways, trucks would use less fuel and spare the planet carbon emissions. Christopher Intagliata reports.
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Unicorns of the Sea Reveal Sound Activities
18/06/2020 Duración: 03minNarwhals, recognizable by their large single tusk, make distinct sounds that are now being analyzed in depth by researchers.
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Human Speech Evolution Gets Lip-Smacking Evidence
16/06/2020 Duración: 03minA study of our closest evolutionary relatives finds that the chimp behavior known as lip smacking occurs in the same timing range as human mouths during speech.
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Printed Coral Could Provide Reef Relief
15/06/2020 Duración: 02minThree-dimensional printed coral-like structures were able to support the algae that live in real corals, which could help restore reefs and grow algae for bioenergy production.