The rise in oil prices and global warming caused by carbon dioxide, making bio-fuel to popular again. Firstly, In the United States oil gasoline is mainly composed of ethanol made from corn. Secondly, In the Brazil ethanol made from sugar cane. Thirdly, In Europe, ethanol is derived from Palm oil. In concludtion, although biofuels minutes into the option but car still valid cause a major cause of global warming. And in the future, there are several ideas that are used in the production of grass and the brave biofuel because they may have better performance and release carbon dioxide out.