How Exactly Do Stones Get Their Shape? [Video]

With the help of SMBC comics illustrator Zach Weiner, this week Minute Physics tackles the conundrum of why some rocks appear to be naturally round, while others end up flat, perfect for skipping across a lake. More »

Source: http://feeds.gawker.com/~r/gizmodo/full/~3/ErHfH-iC8LE/how-exactly-do-stones-get-their-shape

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