Coal is the worst polluter. Who burns the most on one chart!
If your interested in the environment, you probably aren't a big fan of coal. Coal is the worst hydrocarbon on the planet for messing up the atmosphere. China production will soon amount to 50% of the world's total, compared to 6% for the US. BTW China burns high Sulphur content coal which produces approx 3X more pollutants. Still think the US can clean up the planet alone? Also, India is going full speed ahead as the world's 2nd largest producer of coal.