A wildlife camera caught an amazing sight at California's Lava Beds National Monument, leaving park officials in awe. The short clip shows a black bear taking a sip of water from a pool inside a cave.

Deep inside a cave system, explorers lowered a camera into a narrow passage dropping nearly 200 feet straight down into water. The flooded shaft is too deep and dangerous for human entry, leaving the ...

Mars is home to a canyon so vast it makes Earth’s largest formations look small. Using its powerful HiRISE camera, NASA ...

An ungainly barrel of a shark cruising languidly over a barren seabed far too deep for the sun’s rays to illuminate was an unexpected sight. Many experts had thought sharks didn’t exist in the frigid ...