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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Tiny Worms Are Equipped to Battle Extreme Environments
05/10/2019 Duração: 03minScientists found eight species of nematodes living in California’s harsh Mono Lake—quintupling the number of animals known to live there. Christopher Intagliata reports. Learn more about your ad choices. Visit megaphone.fm/adchoices
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Heat Changes Insect Call, but It Still Works
02/10/2019 Duração: 02minTiny insects called treehoppers produce very different mating songs at higher versus lower temperatures, but the intended recipient still finds the changed songs attractive.
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Corals Can Inherit Symbiotic Adaptations to Warming
01/10/2019 Duração: 01minAdult corals can reshuffle their symbiotic algae species to adapt to warming waters—and, it appears they can pass those adaptations on. Christopher Intagliata reports.
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Brains of Blind People Adapt in Similar Fashion
30/09/2019 Duração: 02minThe brains of those who are blind repurpose the vision regions for adaptive hearing, and they appear to do so in a consistent way.
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Science News Briefs from around the World
29/09/2019 Duração: 02minA few brief reports about international science and technology from Hungary to Japan, including one about a wine grape in France that DNA testing shows has been cultivated for almost a millennium.
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Musical Note Perception Can Depend on Culture
25/09/2019 Duração: 02minWestern ears consider a pitch at double the frequency of a lower pitch to be the same note, an octave higher. The Tsimane’, an indigenous people in the Bolivian Amazon basin, do not.
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Nature Docs Avoid Habitat Destruction
24/09/2019 Duração: 03minBBC and Netflix nature documentaries consistently shy away from showing viewers the true extent to which we’ve damaged the planet. Christopher Intagliata reports. Learn more about your ad choices. Visit megaphone.fm/adchoices
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Heat Loss to Night Sky Powers Off-Grid Lights
19/09/2019 Duração: 04minA slight temperature difference at night between a surface losing heat and the surrounding air can be harnessed to generate electricity to power lights. Learn more about your ad choices. Visit megaphone.fm/adchoices
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Early Butchers Used Small Stone Scalpels
18/09/2019 Duração: 02minHomo erectus used hand axes to butcher elephants and other game. But a new study suggests they also used finer, more sophisticated blades. Christopher Intagliata reports.
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Microplastics in Fresh Water Are Mostly Laundry Lint
17/09/2019 Duração: 02minMicroplastic particles are everywhere, but in freshwater systems, 60 percent of particles are clothing lint from laundry.
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Kids Are Not Hurt by Screen Time
16/09/2019 Duração: 04minA study finds no deleterious effects on mental health when kids spend their leisure time texting and engaging in other online activities. Learn more about your ad choices. Visit megaphone.fm/adchoices
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Lab-Grown Human Mini Brains Show Brainy Activity
13/09/2019 Duração: 02minAs the little structures grow, their constituents specialize into different types of brain cells, begin to form connections and emit brain waves. They could be useful models for development and neurological conditions.
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Eavesdropping Puts Anxious Squirrels at Ease
12/09/2019 Duração: 02minSquirrels constantly scan their surroundings for hawks, owls and other predators. But they also surveil for threats by eavesdropping on bird chatter. Christopher Intagliata reports.
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Earth's Magnetic Field Initiated a Pole Flip Many Millennia before the Switch
11/09/2019 Duração: 02minLava flow records and sedimentary and Antarctic ice core data show evidence of planetary magnetic field activity 20,000 years before the beginning of the last pole reversal.
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Humpback Whales Swap Songs at Island Hub
10/09/2019 Duração: 03minAt the Kermadec Islands, humpbacks from all over the South Pacific converge and swap songs. Christopher Intagliata reports. Learn more about your ad choices. Visit megaphone.fm/adchoices
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Food Expiration Dates May Mislead Consumers
09/09/2019 Duração: 03minBetter food labeling could prevent people from throwing away a lot of “expired” food that’s still perfectly edible.
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Farmland Is Also Optimal for Solar Power
05/09/2019 Duração: 02minThe conditions of sunlight, temperature, humidity and wind that make cropland good for agriculture also maximize solar panel efficiency.
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Chemical Tweak Recycles Polyurethane into Glue
04/09/2019 Duração: 01minIt’s not easy to recycle polyurethane, so it’s usually tossed out or burned. But a chemical tweak can turn polyurethane into glue. Christine Herman reports.
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Cholesterol Climbs after Crows Chomp Cheeseburgers
03/09/2019 Duração: 04minWild animals that live near humans have higher cholesterol than their rural counterparts—and our food could be to blame. Christopher Intagliata reports. Learn more about your ad choices. Visit megaphone.fm/adchoices
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How Hurricanes Influence Spider Aggressiveness
30/08/2019 Duração: 02minAs Hurricane Dorian approaches Florida, consider that feeding style means that aggressive tangle-web spider colonies produce more offspring after severe weather, while docile colonies do better in calm conditions.