The earth is home to at least six billion creatures and counting as each year passes by. Each year, an average car produces about six tons of carbon dioxide, a greenhouse gas, into the air. By releasing massive amounts of this greenhouse gas, an imbalance in the earth's natural atmosphere occurs causing severe climate changes overtime. Floods and droughts will cause many of those six billion creatures on earth to lose their homes. Mass transportation serves as a cleaner way to move. Help save your environment and the creatures that live in it. Reduce your carbon emissions by hopping on the bus the next time you go somewhere.