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Two French scientists at the Pierre and Marie Curie University investigated the physics of popcorn: what causes it to jump? A leg of starch slams against the ground. And what’s behind that popping sound? The explosive release of water vapor. Here’s the study.

To get a microscopic look at the starchy bubbles that make popcorn so fluffy, check out Skunk Bear’s video.

Video: SoraPhotography/iStockphoto