This story appears in the November 2012 issue of National Geographic magazine. I got my first lesson in the physics of sand dunes in 1998 on an expedition into the Sahara. In order to take aerial ...
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Chip Chick on MSNThese Kidney Beans On Mars Are Frozen Sand Dunes, And They Could Have Hosted Life A Long Time AgoOn the Red Planet’s northern hemisphere, there are frozen sand dunes that look just like kidney beans-but you definitely ...
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