Nature World: A new study unequivocally blames humans, and not the climate, for the worldwide mass extinction of large ancient species dating back to 100,000 years ago.
"Our results strongly underline the fact that human expansion throughout the world has meant an enormous loss of large animals," postdoctoral fellow Sren Faurby of Aarhus University said in a statement.
Scientists have struggled to figure out what led to this mass extinction of the world's large mammals (also known as megafauna) during and...