From unexplained phenomena to baffling disappearances, follow the clues while discovering our country’s treasured protected ...

Most remarkable about this tree is its isolation: it stands alone on the floor of this expansive, windswept basin. From any ...

Watch how this amazingly agile leopard scales a tree trunk, then learn why they do this and how their bodies are adapted for climbing.

Mountain lions haven't lived in N.Y. for over a century. But a Ring camera video has residents wondering if the big cats are ...

Latest up-to-date Colorado weather forecast: Snow, high and low temperatures, precipitation, severe weather warnings, live interactive radar, almanac.