Grow Your Own Mushrooms in Used Coffee Grounds

Alejandro Velez and Nikhil Arora, co-founders of Back to the Roots LLC in Oakland, Calif., have grown a business out of other companies' trash. They manufacture grow-at-home oyster mushroom kits filled with used coffee grounds. WSJ's Lauren Rudser reports. Video originally aired November 13, 2011.
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Видео Grow Your Own Mushrooms in Used Coffee Grounds канала Wall Street Journal