Resurrecting extinct animals is both “exhilarating and terrifying ... the giant short-faced bear [which lived during the last glacial maximum, until about 11,000 years ago].

PERMAFROST has been shown by many authors to have existed in various parts of England during the last glacial period 1,2. Its full extent and distribution have remained somewhat uncertain but can ...

Learn more about a time period marked by an intense burst of evolution ... Among them were the chordates, to which vertebrates (animals with backbones) such as humans belong.

The Paleozoic era's Silurian period saw animals and plants finally emerge on land. But first there was a period of biological regrouping following the disastrous climax to the Ordovician.

Without human-induced climate change, Earth may have been on track to plunge into another glacial period within 11,000 years.