Heavy metal pollution is usually associated with modern, large-scale industrialisation. However, humans have processed metals ...

The Sac Actun cave system in Mexico’s Yucatán ... including the bones of two long-extinct animals from the Ice Age: the short-faced bear (Arctotherium wingei) and the wolf-like Protocyon ...

Bear tracks are not uncommon in the ... suggest that in both cases they belong to cave bears, a species that went extinct about 28,000 years ago, rather than brown bears. "Unfortunately, some ...

Earlier this year, South Korean scientists presented two cloned puppies of the Yakut Laika dog, which went extinct in the 1950s ... skeletons were found in cave bear (Ursus spelaeus) habitats.