Sahara climate change - information
 

Might be of interest to Sahara travellers

From the magazine 'Science'

ECOLOGY: How the Sahara Became Dry -- Holmes 320 (5877): 752 -- Science

ECOLOGY:How the Sahara Became Dry [2 pages]
And
Climate-Driven Ecosystem Succession in the Sahara: The Past 6000 Years [4 pages]
view abstract here
http://www.sciencemag.org/cgi/conten...i;320/5877/765

If you want the full text one option is pay per view .. or you might find a copy in a library somewhere...