Ancestors+adapting+to+colder+climates

Science Daily Jan. 14, 2004

A UCI research team discovered a key mutation in the mitochondrial DNA that helped our ancestors move to colder climates. When are ancestors moved to colder climates there chance of survival increased because their mitochondrial DNA increased the heat of their bodies to make them survive the cold. This why were fine living in cold weather.

Gar Hoover March 19, 2010