From waste to watts: The East Bay Municipal Water District, which provides water to a portion of the San Francisco Bay Area, has launched a food-waste-to-energy-and-compost program at its wastewater treatment plant. Food waste collected from restaurants and grocery stores is digested by bacteria that emit methane as a byproduct. The emitted methane is collected and used to generate electricity that helps run the treatment plant. The material that remains is then sent to a green-waste composting facility to be turned into fertilizer. (San Francisco Chronicle) Related: A 2008 Ethicurean post described a tour of a municipal composting facility.