LOVELL — Falling 100 feet down into a dark cave is (almost) never a good thing. It is easy to imagine: a mountain lion sprinting after an antelope at 45 mph, both animals cresting a low rise. The ...

Far below the surface of Mexico’s Yucatán Peninsula, a flooded labyrinth of limestone tunnels has quietly guarded one of the most haunting fossil troves of the Ice Age. In the darkness of a submerged ...

Reindeer herders in a Russian Arctic archipelago have found an immaculately preserved carcass of an Ice Age cave bear, researchers said Monday. The find, revealed by the melting permafrost, was ...

Cave bears smash lion skulls, saber-cats starve in silence, and the ice begins to melt. Five episodes of jaw-dropping beauty later, the series leaves you staring at the brutal question about climate ...