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by Edited by Lisa A. Grimaldi | April 20, 2012

Coffee grindsIn Hawaii, Starwood Hotels and Resort's four Waikiki properties -- the Sheraton Waikiki, Moana Surfrider, Sheraton Princess Kaiulani and Royal Hawaiian -- put their used coffee grinds right back into the soil as fertilizer. Thanks to Keith Marsden of Starwood's Waikiki Green Council for the idea. starwoodhotelshawaii.com