Cosmos: Bears the size of cars and savage sabre-toothed cats that ruled the plains of ice age Patagonia were no match for a fatal combination of humans and climate change that wiped them out about 12,300 years ago, according to a new study.
But contrary to previous research, humans alone did not cause their downfall. The fossil record shows humans had been at Monte Verde, on the edge of Patagonia, from about 14,600 years ago. That means the South American megafauna had coexisted with humans for up to...