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Biospeleology and the Dark, Dank World of Caves: Stuff You Should Know Animated

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Most living beings rely on a common energy source to sustain themselves - sunlight. So how do the creatures inhabiting dark, dank caves untouched by the Sun do it? It's called the food chain, with a generous dollop of bat guano. Tune in to this Stuff You Should Know video and find out more!

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