The collapse of tropical forests during Earth's most catastrophic extinction event was the primary cause of the prolonged ...

CALIFORNIA — The four-person civilian Fram2 mission returned home in a splash down off the coast of California on Friday after being the first humans to orbit Earth's polar regions. Riding in ...

For over a century, scientists have been captivated by the mystery of how mammals evolved from sprawling creatures resembling ...

The boomerang, found in a cave in southern Poland, may be the oldest in the world, dating back 40,000 years, according to researchers.