Researchers found high-resolution evidence of a future earthquake threat.

Learn more about the Meteor Crater near the Grand Canyon and how it may have created a paleolake thousands of years ago.

More than 300 million years ago, during the Carboniferous Period, much of northern Illinois outside Chicago — including what is now the Mazon Creek ...

One night in 373 BCE, the earth beneath the Greek city of Helike groaned and cracked. As homes crumbled and temples collapsed ...