Scientist Pete Kelsey and his team have 3D-mapped the entire island of Alcatraz, discovering Civil War secrets, prisoner escape routes – and looking at ways to preserve the island for the future.

Ancient human history is now resurfacing, quite literally, from the bottom of the sea. Off the western coast of Taiwan, ...

The deep roots of Earth's oldest continents have long been thought to be unshakable. But a new seismic discovery suggests that even these stable landmasses can change. Beneath the center of North ...

Entombed at the Ashfall Fossil Beds State Historical Park, teeth from the rhino fossils were analyzed by researchers at the ...