Garbage into gold, via worm poop

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Tom Szaky is passionate about worm poop. So passionate that he dropped out of Princeton to start Terracycle, a company that sells worm poop. Vermicomposting is the process by which earthworms eat, digest and excrete castings (aka worm poop). Water is mixed with the worm castings to produce a nitrogen rich ‘tea’ prized by gardeners who believe the mixture makes plants grow faster and healthier than chemical fertilizers.

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