Author Archives: Riley Black

Footprint Discovery Hints at Humans in the Americas More Than 20,000 Years Ago

Seeds found in fossilized tracks fuel new speculation about when—and how—people arrived

— Read more on ScientificAmerican.com

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Prehistoric Plankton Became Predators to Survive a Mass Extinction

When the sun disappeared, tiny coccoliths turned to hunting

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Earth’s Biodiversity Bursts Do Not Follow Expected Pattern

Life’s great radiations do not always line up with mass extinctions, a new study shows

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Paleontologists Dig Into a Giant Sloth Boneyard

Ancient drought and unfortunate bathroom habits may have doomed some ice age sloths

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The Time of Giants

Envisioning the Jurassic world requires a lot of fossil detective work

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What Made Dinos Sore?

A new review digs into how the terrible lizards dealt with aches and pains

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