The polar bear has become a symbol for threatened wildlife, and its future in a warming world has created much controversy. The predator’s past is equally controversial. The evolutionary history of ...

For nearly 30 million years, a 2,000-pound beast known as the entelodont ruled a sweeping empire from Mongolia to what is now ...

In prehistoric North America, the short-faced bear (Arctodus simus) ruled the land. It was one of the biggest and most powerful predators the world has seen, weighing an immense 900 kilograms and ...

A new prehistoric marine predator has been identified which researchers have said sheds light on the origins of the distant relatives of modern crocodiles. The 10ft-long reptile - called Ieldraan ...