Climate Change Doomed the Mammoths

Humans are pretty good at mucking up the Earth, whether we’re warming the climate, leveling the rainforest, or driving wild animals extinct. But climate change, at least, was wreaking havoc long before we got involved. For instance, it’s looking very likely that global warming, rather than human spears, doomed Earth’s… » 7/24/15 4:40pm 7/24/15 4:40pm