74 000 years ago many more hominid species roamed the earth in small, widely separated groups. Only a few breeding pairs survived the Toba Super Volcano Eruption. My book tells the tale and this blog investigates the conditions during and after this occurence.
Earth looked very different then. The Black sea was a miles deep trough and the sea levels were much lower. Ice covered much of europe and the rest was a low rainfall desert. In these tough conditions a mjor catastrophe was bound to kill of all but the very hardy. The Toba super volcano was just such an event as it caused a millenium long volcanic winter.