What is pollution doing to the world?

When you are driving in your car and there is a load of rubbish coming out of your exhaust (Witch is carbon dioxide) this CO2 will rise up to the earths atmosphere and stop heat from getting out so the heat can get in but not out and that heat that is getting trapped inside the earths atmosphere will melt the polar ice caps and flood the earth so in other Words we are all going to die if we don't do something about it!