The Sahara is often thought of as the driest desert in the world, but there is in fact a desert that is even older and more arid, with some parts receiving absolutely no rain at all for 200 million ye ...
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Sand dune mystery that baffled scientists for decades finally solved“I first encountered star dunes in Namibia 20 years ago, and was instantly amazed at the size of them. “I have a vivid memory of the long climb to the top, struggling up very loose sand in the ...
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