Biofuels

The U.K. is mandating the use of biofuels but there is much concern surrounding the fact that food prices will increase and land will be needed to create biofuel plants. Scientists in the U.K. and U.S. have found that the cultivation of biofuels can increase the output of CO2 and other gases blamed for global warming because of changes in land use. It seems like a good idea but will fuel prices ever go down? Is there any source of fuel that won't harm the environment? I think we are making great progress towards getting away from fossil fuels but seems there is much controversy and could be a while before we see any full proof outcome.