Obama is about to release his most ambitious climate policy yet —( It's about damn time )

On Monday, President Obama will release the final version of his most ambitious climate-change policy to date — an EPA program to cut carbon-dioxide emissions from the nation's power plants.
A White House fact sheet suggests the final version of the Clean Power Plan will be slightly stronger than the initial draft proposal released last summer.
 So how big a deal is this plan, in the grand scheme of things? It really depends how you look at it.