News tagged with sahara

Image: Lake Chad from orbit

This Landsat-8 image from 4 July 2014 shows Lake Chad in West Africa's Sahel region – a transition zone between the Sahara Desert to the north and savannahs and woodlands to the south.

dateSep 05, 2014 in Environment
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When the Sahara turned to sand

The Sahara wasn't always a desert. Trees and grasslands dominated the landscape from roughly 10,000 years ago to 5,000 years ago. Then, abruptly, the climate changed, and north Africa began to dry out.

dateNov 11, 2013 in Earth Sciences
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