The CDC's second-in-command, Dr. Ralph Abraham, abruptly stepped down Monday. It's the latest in a string of resignations at the top of the agency.

Caves are natural holes underneath the surface of the earth that are hollowed out rock typically formed by water. If you’ve ever been able to visit one in person, you know how amazing it feels to ...

This unique alkaline lake in Central Washington state is a scenic gem offering fishing, hiking, and dramatic caves in a ...

A new study confirms that ancient cave paintings in France’s Dordogne region were created nearly 16,000 years ago.

In the basement of an unassuming red brick apartment building in Bergen County lies a secret passageway to local history few living people know about, much less, have ever seen. Through a crawl space ...