Introducing herds of large herbivores in the Arctic would disturb surface snow, allowing cold air to reach the ground and keep the permafrost frosty.

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In mice, a test for lung cancer involves nanoprobes that recognize tumors and send reporter molecules into the urine for simple analysis.

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As he endorsed Joe Biden today, former president Barack Obama touched on some environmental, economic and science matters.

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Researchers studying yellow warbler responses to the parasitic cowbird realized that red-winged blackbirds were eavesdropping on the calls and reacting to them, too.

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Well, it’s probably there because the odds on its presence have gone way up in the past 40 years. But such parasites are still much more of a health problem for whales and dolphins than they are for us.

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Although the tusk can be a weapon, the variation in tusk length among animals of similar body size points to it being primarily a mating status signal.

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Pulitzer-winning Laurie Garrett, author of The Coming Plague: Newly Emerging Diseases in a World Out of Balance, talks about the dangers of politicians offering coronavirus misinformation.

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Tigers and lions at the Bronx Zoo have tested positive for the virus, and studies show that house cats—but apparently not dogs—can become infected.

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Coronavirus research requires high-containment labs. Journalist Elisabeth Eaves talks with Scientific American contributing editor W. Wayt Gibbs about her article “The Risks of Building Too Many Bio Labs,” a joint project of the New Yorker and the Bulletin of the Atomic Scientists.  

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Humboldt squid can rapidly change the pigmentation and luminescence patterns on their skin by contracting and relaxing their muscles, possibly to communicate.

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