Reblogged from Rashid's Blog:

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Arabia is a vast desert today,but it was not so always.  Satellite images have revealed that a network of ancient rivers once habited Arabian Desert. The images triggered a major potentially ground-breaking research project led by the University of Oxford into human evolutionary heritage. The research team will look at how long-term climate change affected early humans and animals who settled or passed through and what responses determined whether they were able to survive or died out.

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