Decline of bronze age 'megacities' linked to climate change

Scientists have demonstrated that an abrupt weakening of the summer monsoon affected northwest India 4,100 years ago. The resulting drought coincided with the beginning of the decline of the metropolis-building Indus Civilization, which spanned present-day Pakistan and India, suggesting that climate change could be why many of the major cities of the civilization were abandoned.

Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/v...