During the third millennium BCE, the Indus Civilisation flourished in what is now northwest India and Pakistan. Between 2200-1900 BCE the culture was characterised by long-distance exchange networks, carefully planned urban settlements such as Harappa and Mohenjo Daro that had sophisticated sanitation facilities, standardised weights and measures, and a sphere of influence that extended over a million square kilometres of territory. The culture was seemingly at its height when the end came (collapse attributed to climatic change) but recent research published in both the open access journal PLoS ONE and an earlier 2012 article in the International Journal of Palaeopathology...