Producing biofuel typically requires growing a feedstock, such as switchgrass, that consumes valuable land and water. But any carbon source could provide that biomass, including garbage. Fulcrum BioEnergy says the plant it plans to build near Reno, Nevada, in 2015 could convert 160,000 tons of municipal trash into 10 million gallons of transportation fuel per year—and for less than 70 cents a gallon. Machines would shred wood, fabric, and nonrecyclable paper and plastic into two-inch bits and feed them to a gasifier. A chemical reaction would then convert the gases into ethanol, jet fuel, or diesel.