Where did our species first emerge? Fossils discovered in Morocco dating back more than 773,000 years bolster the theory that Homo sapiens originally appeared in Africa, scientists said in a study ...

Limestone cliffs and cave systems hold clues to a prehistoric ocean.

Add Yahoo as a preferred source to see more of our stories on Google. Monument staff work on excavated dinosaur fossils in the Quarry Exhibit Hall Parking Lot. Workers at Dinosaur National Monument ...

Three tiny Purgatorius teeth found in Colorado are helping scientists trace how early primates evolved and spread across North America.

Marine fossils discovered near the summit of Mount Everest reveal that the world’s highest mountain was once part of an ancient ocean floor before tectonic collisions lifted the Himalayas.