| 03 August 2010

Photo via divemasterking2000 Nitrates are commonly found in groundwater, ending up there after they're used for fertilizing crops or from storm-water run-off. Typically a contaminate to worry about, a group of engineers from Stanford University have figured out how to turn the problem of nitrates in the water in to a possible solution for energy generation. While their design started out as a nitrous oxide thruster for spacecraft, they figured out how it could also be used at wastewater treatment plants to turn decompose nitrous oxide gas into... Read the full story on TreeHugger