Michel Danino's "Lost River: On the Trail Of The Saraswati" is a pretty good survey of this view of climate change and eastward migration. http://www.amazon.com

Michel Danino's "Lost River: On the Trail Of The Saraswati" is a pretty good survey of this view of climate change and eastward migration. http://www.amazon.com/Lost-River-The-Trail-Sarasvati/dp/0143068644/ref=sr_1_1?ie=UTF8&qid=1338789233&sr=8-1 http://www.amazon.com/Lost-River-The-Trail-Sarasvati/dp/0143... Edit: Edited for spelling