Drought, heat and fire take a toll on staple crops due to climate change. Wheat crops faces many threats; wheat in parts of Europe and the US are showing reduced protein and reduced yields. According to the journal Nature, for every degree Celsius increase in temperatures, global wheat production will fall 6%. The burning of wheat and rice chaff in fields (rather than practicing no-till agriculture) creates greenhouse gas pollution and human health problems. Chaff can be used as mulch to fight weeds and protect soil; it can be fed to cattle as fodder, with the resulting manure acting as fertilizer. When burned for the purpose of biomass energy, wheat chaff has more BTU’s than cordwood.