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Scientists Used Lasers To Finally Explain How Tiny Dunes Form — And This Might Hold Clues to Other Worlds
Next time you explore a beach or a desert, look down at the sand. You might spot patches of small ripples just a few centimeters tall. Wind can shape these miniature dunes in less than half an hour ...
Winds blowing over a dune can move grains of sand in three main ways. What path these grains take depends on their size, although the exact size in each category can change from site to site. Think of ...
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