pollution and oh my gosh, people, why don't we use biofuel(gas for car made out of grease)? Let me tell you, It is because the big componies want to keep there money source! It is rediculous, we are killing our plant because some people want to be RICH! AAAAAAAAAAAAAA sorry for the rant, I'm just really made about this Also, the oil componies (idk how to spell) just dump the oil into water sourses and causing all sourts of problems