The discovery of Stone Age needles made from the bones of foxes, cats and other small carnivores reveal how prehistoric ...
The first humans who spread across North America during the last Ice Age put mammoths at the top of their menu, according to ...
During an ice age, the polar regions are cold ... continental-size glaciers can cover enormous regions of the earth. Ever since the Pre-Cambrian (600 million years ago), ice ages have occurred ...