Indus civilisation wiped out after 900-yr drought: IIT study
IIT Kharagpur researchers have claimed the Indus Valley civilisation had been wiped out over 4,000 years ago due to a drought which lasted 900 years. The drought had dried the rivers along which the civilisation flourished, forcing the inhabitants to move for better rain conditions towards the east and south. Earlier, the drought was believed to have lasted 200 years. 