A pair of bears play fought inside a man-made cave at a Thai zoo. Footage shows the animals grappling in the concrete dome covered with vines at Khao Keow Open Zoo in Chonburi, Thailand, on October 18 ...

The arrival of human ancestors in Europe some 40,000 years ago coincided with the downfall of the cave bear, scientists have revealed. New evidence suggests humans hunted the bear and drove it ...