Volcanic Winter, Population Bottlenecks, and Human Evolution (Stanley H. Ambrose)
The eruption of the Mount Toba supervolcano in the Indonesian island of Sumatra 74,000 years ago brought about an era of severe environmental degradation that decimated populations of Neanderthals and modern humans. Archaeological evidence suggests that modern humans survived this era by creating cooperative intergroup social networks and behaving like tribes. Neanderthals, on the other …