Difficulties creating biofuels from grass and wood chip

Some biofuel companies are finding the going hard to create biofuels from grass, woodchip, many are having to become creative to their business, but the result of this is the fact that some are having to abandon their green credentials. Gevo a major advanced biofuels company that has received millions in US government funding to develop biofuels made from cellulosic sources. It is finding that it can't use materials like woodchip and grass. Read more ...