MSN: In discussions of the global food crisis, one of the objects of blame has been the diversion of crops for the manufacture of bio-fuels in the US. While land should not be used for fuel crops in a food crisis, it is also true that we need non-conventional energy. In recent years, countries all over the world have been interested in finding non-conventional energy sources because oil, natural gas and coal are not renewable sources (although some efforts to manufacture artifical coal …