Tibesti: The Height of the Sahara

The Sahara is known from being oppressively dry and sandy, but it is certainly not uniform in appearance. When you look at a satellite image of the Sahara, you will notice a fair amount of discolouration mixed in with all of that sand – black/brown mountains of volcanic origin rising out of the desert. The…

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Lake Chad: Where Did It Go?

When it comes to globally-significant bodies of water disappearing before our eyes, the Aral Sea seems to hog the international spotlight. It’s a very glamorous story with lots of intriguing subplots: large-scale irrigation diversion, failed Soviet economic models, environmental contamination, health crises, horrendous dust storms, regional climate change. But by no means is the Aral Sea the…

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