I have an even more radical idea: Dredge giant canals and create vast new seas in the lower-elevation parts of the Sahara Desert. This will let the Atlantic Ocean spread into the newly-created seas, helping to lower sea levels worldwide. The dredgings from the operations can be used to create new mountain ranges in nothern Africa between the new seas, hopefully creating some orthographic precipitation, which in turn can make thew new mountainous areas more habitable.
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"There's two kinds of men in the world. Those who have a crush on Linda Ronstadt, and those who never heard of her." - Willie Nelson
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