Deep inside a maze of canyon passages, the team follows 1800s signatures toward a perfect circular shaft known as the Devil’s ...

The United States is home to several rare animal species that exist nowhere else in the world. Many of them live in protected ...

A calcite deposit in southern Nevada reveals 580,000 years of climate record, according to a new study published in the journal Nature Communications.

Climate history recorded in a calcite deposit in a southern Nevada cave indicates that the hot, arid southwestern United ...

Across America, a handful of extraordinary national parks give travelers the rare chance to see endangered animals thriving ...

Discover rarely seen Kentucky caves, from historic Sand Cave to remote Buffalo Cave, and explore the state’s hidden ...