"Ancient lakes of the Sahara"
The Sahara has not always been the arid, inhospitable place that it is today ? it was once a savannah teeming with life, according to researchers at the Universities of Reading and Leicester.
In their article ?Ancient lakes of the Sahara?, which appears in the January-February issue of American Scientist magazine, Dr Kevin White of the University of Reading and Professor David Mattingly of the University of Leicester explain how they used satellite technology and archaeological evidence to reveal new clues about both the past environment of the Sahara and of human prehistory in the area.
?The climate of the Sahara has been highly variable over the millennia and we have been able to provide much more specific dating of these changes,? said Dr White. ?Over the last 10,000 years, there have been two distinct humid phases, separated by an interval of highly variable but generally drying conditions between roughly 8,000 and 7,000 years ago. Another drying trend took place after about 5,000 years ago, leading to today?s parched environment.
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Ancient lakes of the Sahara: