The longest mapped network of caves in the world also contains one of the most implausible marine collections in North America. In Mammoth Cave, sharks and their kinsmen are preserved in layers of ...

Deep beneath Kentucky, scientists have uncovered something no one expected, perfectly preserved predators from an ancient sea hidden for over 300 million years.

Mammoth Cave National Park, the world’s longest known cave system, lies just a short drive from Glasgow. This UNESCO World Heritage Site offers tours ranging from accessible walks to challenging ...

I've been to all 50 states, and in my opinion, these are the 15 worst US states that were totally underwhelming — and not ...