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Barnum Brown: The Man Who Discovered Tyrannosaurus Rex

Born in rural Carbondale, Kansas in 1873, Brown would spend nearly his entire adult life searching for fossils all over the world

"The numbers are incredible," says photographer Suzi Eszterhas of the multitudes of migrating wildebeests that cross from Tanzania to Kenya and back each year.

For Wildebeests, Danger Ahead

Africa’s wildebeest migration pits a million thundering animals against a gantlet of perils, even—some experts fear—climate change

Memories are stored in a region of the brain called the hippocampus, shown in red in this computer illustration.

How Our Brains Make Memories

Surprising new research about the act of remembering may help people with post-traumatic stress disorder

When some turtles swim south in the fall, scores of them get trapped by Cape Cod, where many die of hypothermia.

Saving the World’s Most Endangered Sea Turtle

Stranded on Cape Cod beaches, these Kemp’s ridley turtles are getting a helping hand from volunteers and researchers

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Wild Things: Life as We Know It

Running elephants, far-flying mosquitos, ancient crocodiles and more…

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