Science Talk

Science Talk

By Scientific AmericanScience

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Science Talk episodes

September 21, 2017 Galaxies Far, Far Away Send Us Highest-Energy Cosmic Rays
A new study hints that the most energetic particles ever seen come from far beyond the Milky Way.

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4 min
September 20, 2017 Springtime Now Arrives Earlier for Birds
A trove of scientific notes from the early 1900s suggests a warming climate is driving birds to migrate earlier to New York’s Mohonk Preserve. Julia Rosen reports.

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5 min
September 17, 2017 Warming Puts Squeeze on Ancient Trees
As temperatures rise, the tree line moves upslope. But ancient bristlecone pines are losing that upslope race to faster-colonizing neighbors. Christopher Intagliata reports.

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4 min
September 16, 2017 Rising CO2 Pushes Plants to Drink Sparingly
As carbon dioxide levels rise, plants are sipping water more efficiently—which could come in handy in a drier future. Christopher Intagliata reports.

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4 min
September 12, 2017 Cannibalism Quells Contagion among Caterpillars
Cannibalistic caterpillars prevent disease from decimating their populations by removing infected individuals. Emily Schwing reports.

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4 min
September 11, 2017 Feds Want to Know Who's Protesting Trump
Internet hosting company DreamHost is battling the U.S. Justice Department over requests for information about people visiting a Web site for organizing protests. Larry Greenemeier reports.

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4 min
September 07, 2017 Windows Vex Bats' Echolocating Abilities
Smooth vertical surfaces like windows reflect sound waves away from bats—meaning bats can't "see" windows and similar obstacles with echolocation. Christopher Intagliata reports.

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4 min
September 06, 2017 Wetlands Could Save Cities--and Money, Too
Using insurance industry models, researchers determined that wetlands prevented some $625 million in damages due to Hurricane Sandy. Christopher Intagliata reports.

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4 min
September 02, 2017 Rabbit Relatives Reel from Climate Change
Pikas, a hampster-size rabbit relative, have disappeared from a 64-square-mile plot in the northern Sierra Nevada—and climate change is a likely culprit. Christopher Intagliata reports.

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4 min
September 01, 2017 Winking Star 6 Centuries Ago Explained
A star that appeared and then vanished in A.D. 1437 was an explosion in a binary star system—which now reveals clues about the life cycle of certain stars. Christopher Intagliata reports.

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5 min

About Science Talk

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Science Talk is a podcast of longer-form audio experiments from Scientific American--from immersive sonic journeys into nature to deep dives into research with leading experts.