The timing of the dispersal of our species from Africa is a continuing and lively topic of debate. Evidence that modern humans existed in China more than 100,000 years ago is both equivocal and thought-provoking. Read More.
Thursday, 25 November 2010
More than 2000 times as massive as the blast that ripped open Mount St. Helens in 1980, the Indonesian "super-volcano" Toba ejected millions of metric tons of volcanic ash, sulfur, and other debris into the atmosphere 74,000 years ago. The eruption darkened the skies, cooled the globe by 10˚C for half a decade, and redirected the course of human evolution. At least that's what some climatologists and archeologists have concluded. But a new model indicates that Toba's climate effects were milder and abated quickly, suggesting that humans may have made it through the incident relatively unscathed. Read More