Science Talk

By Scientific AmericanScience

Science Talk episodes

April 16, 2015 Granular Materials Could Thwart Missiles
The harder a projectile hits a granular substance like sand, the more that material acts like a solid, effectively repelling the intruder. Christopher Intagliata reports

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4 min
April 15, 2015 A Few Hundred Smartphones Could Catch Earthquakes Early
Thanks to their GPS systems, smartphones in an array could pick up movements indicating the onset of an earthquake and provide extra seconds of early warning. Cynthia Graber reports

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3 min
April 13, 2015 Martian Glaciers Equal Meter-Thick Planetary Ice Shell
Radar measurements and models of Earthly glacial ice flows led researchers to conclude that the glaciers spotted on Mars from orbiters contain nearly 150 billion cubic meters of water. Lee Billings reports

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4 min
April 09, 2015 Nobelist Talks about Exercise and Chromosome Integrity
In a Google Hangout Nobel laureate Elizabeth Blackburn and Scientific American Editor in Chief Mariette DiChristina discuss the relationship between exercise and telomere length, which is related to diseases of aging

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4 min
April 08, 2015 Typing Style Reveals Fatigue or Disease
How a person types can reveal the state of their brain, according to a study that tracked keystrokes when the typist was alert or groggy. Cynthia Graber reports

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3 min
April 07, 2015 App Provides Pocket Time Capsule
New app called Pivot will let gadget users see old and new images of sites as they walk past. Larry Greenemeier reports

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3 min
April 06, 2015 Online Breast Milk Buyers May Get Cowed
An analysis of human breast milk bought online reveals that some 10 percent of the samples contained cow’s milk. Dina Fine Maron reports

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3 min
April 03, 2015 B.O. Gives Up Its Stinky Secrets
Staphylococcus hominis is a key perpetrator of body odor—and researchers say selectively interfering with it could make for more effective deodorants. Christopher Intagliata reports

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3 min
April 02, 2015 Outdoor Exercise Worth Some Air Pollution Risk
A Danish study of more than 50,000 adults suggests that exercise lowers risk of death—even if you work out amidst urban air pollution. Christopher Intagliata reports

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4 min
April 01, 2015 Diabetics Benefit by Biggest Meal Early
A small study finds that diabetics who ate a big breakfast and small dinner had better glucose control than those who ate the opposite. Steve Mirsky reports

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3 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.