A new study of dinosaur biodiversity challenges the belief that the megafauna were on their way out 66 million years ago ...

The finding adds new urgency to modern concerns. Scientists discover stunning prehistoric event still impacting us today: ...

EDITOR’S NOTE: One remarkable component of the Greater Yellowstone Ecosystem is its complete suite of wild North American ...

Researchers have determined the age and origin of a massive tree that was found at the pre-Columbian city of Cahokia in what ...

New research suggests dinosaur populations were still thriving in North America before the asteroid strike, but it’s only one ...

Newly dated fossils from New Mexico challenge the idea that dinosaurs were in decline—and suggest instead they had formed ...

A new analysis of stone tools offers strong evidence for the theory that ancient people from the Pacific Rim traveled a coastal route from East Asia during the last ice age to become North America's ...

Analysis of a massive wooden monument has uncovered new secrets of Cahokia, America’s greatest lost civilization.

Stories of towering beings once roaming North America have echoed for centuries. Some say the myths hide real prehistoric truths—others call them fantasy.

Largely outshone by fossils of horses, the earliest camels are getting another look from scientists determined to sort out ...

From desert carvings to underwater ruins, these ancient structures are so advanced that experts still can’t agree on what ...