Biofuel helps to overcome energy shortages, and to improve the environment, as well as to increase job opportunity. So, on the one hand, biofuel solves the above mentioned problems; on the other hand, it brings new challenges to the fields of energy, environment and economy. The development of...

An environmental policy has been created which requires the polluter to bear the costs and responsibility of the pollution and the externalities that are proximate in cause of the pollution. This is the Polluter Pays Principle. In a purely free market one only faces their private costs; however...