Harmful gasses from cars ---Andrew Chang entry#1

CO2 or Carbon dioxide is a harmful gas that contributes to global warming. Conventional cars run on gasoline which when burned, can emit CO2. Also, mining for the gasoline emits even more CO2 because of the tools needed to mine for it. We need to know how we can stop this complete mess. We have to replace our conventional cars with hybrid cars or at least make our cars run on ethanol (fuel made from biomass). By doing these things, we can lower our carbin footprint and hope for a cleaner earth in the future.