Why isn't the world covered in poop? - Eleanor Slade and Paul Manning 

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Each day, the animal kingdom produces roughly enough poop to match the volume of water pouring over Victoria Falls. So why isn’t the planet covered in the stuff? You can thank the humble dung beetle for eating up the excess. Eleanor Slade and Paul Manning explain how these valiant insects make quick work of an endless stream of feces.
Lesson by Eleanor Slade and Paul Manning, animation by Anton Bogaty.
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