Geology: Ancient Sumatran supervolcano harmed the ozone layer and led to human population bottleneck
A catastrophic drop in atmospheric ozone levels around the tropics some 75,000 years ago caused a bottleneck in the human population, a study concluded. Ozone levels fell by half as a result of the eruption of the Toba supervolcano in Sumatra, experts from Germany‘s Max Planck Institute for Chemistry found. One of the Earth’s largest-ever explosions, Toba is … Read more