| 
              
 Photo Source: http://www.york.ac.uk/res/sots/eggs2mi.htm | Actually, 
              the burning of coal is the leading cause of global warming, smog, 
              acid rain, and other toxic air pollutants in the world. 
              According to the Union of Concerned 
              Scientists, a typical coal plant emits 3,700,000 tons of carbon 
              dioxide, 10,000 tons of sulfer dioxide, and 10,200 tons of nitrogen 
              oxide, as well as many other harmful and polluting substances including 
              carbon monoxide, murcury, arcenic, and lead. |