"A village in rural Sichuan, central China is pioneering a biogas project that authorities hope will ease the region's chronic smog problem and help reduce the country's soaring CO2 emissions." Roya Stephens reports.
Bio-Gas defined by Wikipedia:
"Biogas typically refers to a gas produced by the biological breakdown of organic matter in the absence of oxygen. Biogas originates from biogenic material and is a type of biofuel."
Bio-Gas or Methane can be created from the waste goods of farming communities. It is the by product of fermenting or fermentation of bio-degrateable materials. Such as manure, city waste, and other sustainable energy crops.