Strictly in regards to air pollution, corn ethanol is better. No doubt ethanol has its own problems and baggage, but yes it's better for the air and possibly a part of a solution to rising carbon dioxide levels reaching the air. Time is running out and we need to implement solutions fast.
Corn Ethanol is degrading our country. The EPA is forcing the "bio-fuel" agenda without a care. Bio fuels are more dangerous, cost more to make, and are all around more harmful that traditional fuels. Think of every gallon of traditional fuel that was bunred for each gallon of "bio-fuel" whenever you fill up.