Spider monkey (Ateles geoffroyi) hangs by tail with mouth open.

Wild Things: Spider Monkeys, Fire Ants, Hagfish and More…

Dinosaur “thunder thighs” and fast-flying moths

Argentinosaurus and Futalognkosaurus, pictured, from prehistoric South America, stretched more than 100 feet long and weighed in excess of 70 tons.

How to Build a Giant Dinosaur

Sauropods were humongous creatures, but how they got so large is a mystery that paleontologists are still trying to unravel

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15 Facts About Tornadoes

Decades of research have made these storms more predictable, giving people more time to find shelter, but we’re sadly still vulnerable

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When Dinosaurs Were New

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