Jason, because of the cost of the plant, with current fuel prices, natural gas electricity is less expensive than coal. If pollution costs are later added, this makes coal electricity even cost more. When you look at what costs really are instead of some estimates of prices of coal from the 70s it makes perfect sense to shift away from it. Better regulations would cause the shift faster, but many in congress want to continue favoring coal. China is a different matter. They don't have the US's natural gas resources, which makes coal less expensive over there. The sky is full of pollution, go visit if you get a chance. The US should continue researching cleaner coal technology, but the share of coal in North America and its pollution should go down.