Koalas with the bodies of lions. Elephants the size of your dog. Gigantic, 8-foot-tall sloths. These aren’t creatures found in science fiction: They walked our planet a million years ago, during the ...

When reindeer herders in Siberia spotted a small snout protruding from thawing ground, they were not expecting to uncover a 14,000‑year‑old puppy so intact that its whiskers, eyelashes, and even the ...

At a site known as Natural Trap Cave, a team of scientists are rappelling down to uncover the secrets of what the Earth was like during the Pleistocene ...