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Over 2.5 billion people ...

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Joel Paschal’s “Junk Raft”

Over 2.5 billion people don't have sanitation.  As we conclude our look at The World’s Waste, we'll talk with the author of The Big Necessity: The Unmentionable World of Human Waste and Why it Matters. Also, a marine scientist recounts his journey to the island of plastic floating in the North Pacific.

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