What if we could take all the trash and waste we generate every year – gigatons worth – and used it again as raw materials. What we would have is a closed circle, one where we have everything we need without taking anything else from nature.

Selects: Birthmarks: Probably Not the Mark of the Devil
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The Stuff You Should Know Doin’ Science Playlist: How Chaos Theory Changed the Universe
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The Stuff You Should Know Doin’ Science Playlist: How Global Warming Works
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