A missing Kelseyville man was found dead in Clear Lake less than 24 hours after disappearing. Authorities say no foul play is ...

Researchers discovered the body of water—now the largest known underground thermal lake in the world—while investigating a ...

There's no conclusive evidence, but a river reputed by some to be the oldest in the world dates back 340 million years.

Buried several miles beneath East Antarctica's ice, Lake Vostok is one of the largest freshwater lakes on Earth, rivaling ...