New genetic research reported in the Proceedings of the National Academy of Sciences refutes a recent theory that there is evidence for the presence of modern humans in southern Asia before the super-eruption of the Mount Toba volcano in Sumatra. Artist’s impression of the Toba super-eruption (world.edu) The Toba super-eruption – one of the most catastrophic events since humans evolved – happened around 74,000 years ago. In 2005, Professor...