Minnesota has been the first US state to switch nearly all its diesel supply to a blend of 20 % biodiesel and 80 % petroleum diesel , called B20 . The US Environmental Protection Agency has recognised this as the only advanced fuel because it can reduce greenhouse gas emissions by more than 50 % . In the 10 years since biodiesel became a fuel standard in Minnesota , carbon dioxide emissions have fallen by more than 7.4 billion pounds , according to the American Lung Association of Minnesota .
Minnesota has become the first US state to switch nearly all its diesel supply to a blend of 20% biodiesel and 80% petroleum diesel, called B20. The US Environmental Protection Agency has recognised biodiesel as the only advanced biofuel because it can reduce greenhouse gas emissions by more than 50%. In the 10 years since biodiesel became a fuel standard in Minnesota, carbon dioxide emissions have fallen by more than 7.4 billion pounds, according to the American Lung Association of Minnesota.