The verdict is finally in on an ancient murder mystery — and, surprise, surprise, humans are looking very guilty.
Many giant animals called megafauna — think saber-toothed tigers, woolly mammoths, and giant armadillos — went extinct thousands of years ago, but up till now, scientists haven't been sure whether it was climate change or humans who killed them off. But researchers from Exeter and Cambridge who ran a statistical analysis comparing the timing of the animals’ extinctions with the arrival of humans and changes in climate, reached the conclusion that mankind did most of the killing.
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