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Sierra Magazine: Explore, enjoy and protect the planet.
The Green Life: Leave No Waste

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March 31, 2007

Leave No Waste

Smma07_gl_sheepUnsqueamish recyclers are devising innovative uses for extreme castoffs. Worm castings provide the raw material for TerraCycle's natural plant foods, which are packaged in used soda bottles. The dung of Welsh sheep and Sri Lankan elephants, which eat cellulose fibers, has been enlisted as a source of pulp for paper. And the city of San Francisco is testing a way to turn dog droppings into methane for power. What's next, a car that runs on dirty diapers?

(Illustration by Josef Gast)

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