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Science 9 May 2008:
Vol. 320. no. 5877, pp. 752 - 753
DOI: 10.1126/science.1158105

Perspectives

ECOLOGY:
How the Sahara Became Dry

Jonathan A. Holmes

A continuous lake record elucidates how Saharan climate changed gradually from humid to today's desert conditions.


Environmental Change Research Centre, Department of Geography, University College London, London WC1E 6BT, UK. E-mail: j.holmes{at}ucl.ac.uk

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Science. ISSN 0036-8075 (print), 1095-9203 (online)