incomplete combustion\plenty of other stuff in the ground in it(heavy metals etc.). The smoke is not just CO2. Plus " sulfur dioxide (SO2) and nitrogen oxides

incomplete combustion\plenty of other stuff in the ground in it(heavy metals etc.). The smoke is not just CO2. Plus " sulfur dioxide (SO2) and nitrogen oxides (NOx) are the primary causes of acid rain. In the US, About 2/3 of all SO2 and 1/4 of all NOx comes from electric power generation that relies on burning fossil fuels like coal." http://www.policyalmanac.org/environment/archive/acid_rain.shtml http://www.policyalmanac.org/environment/archive/acid_rain.s... and acid rain causes a number of environmental problems.