The Ice Age (and its resulting changes in climate) was among one of the harshest periods on Earth. During an ice age, the ...

Archaeologists believe that Homo sapiens in Europe during the Upper Paleolithic period (between 45,000 and 10,000 years ago) used fire in several different ways. “Fire was not just about keeping warm; ...

In his later life, my father-in-law routinely woke up for the day at 3 a.m. He'd become such an early bird that he morphed into a night owl, a man resigned to a post-retirement inability to clock in ...