TO GO WITH AFP STORY BY CEDRIC SIMON A picture taken on January 31, 2013 in Krautergersheim, eastern France, shows waste water after being processed at a treatment plant. In Krautergersheim, the self-proclaimed sauerkraut capital, polluting sauerkraut juice obtained after fermenting cabbage, is transformed into heat and electricity at the waste-water treatment plant through anaerobic digestion, a bacterial process that produces methane, which can be used in generators for electricity production and/or in boilers for heating purposes. AFP PHOTO / FREDERICK FLORIN (Photo credit should read FREDERICK FLORIN/AFP/Getty Images)
