Evidence Is Mounting Humans Were Responsible For Extinction Of Large Mammals

The debate has raged for decades: Was it humans or climate change that led to the extinction of many species of large mammals, birds, and reptiles that have disappeared from Earth over the past 50,000 years?

By "large," we mean animals that weighed at least 45 kilograms – known as megafauna. At least 161 species of mammals...