Toba: When Humanity Nearly Went Extinct

Seventy-five thousand years ago, something tore the sky open over Sumatra. By the time the ash settled, an estimated 10,000 humans were all that remained on Earth.We are the descendants of those few who didn't die. Every person alive today, regardless of nationality or culture, carries the genetic footprint of that tiny, desperate remnant of survivors who pushed through a decade of volcanic winter...