Last month, President Obama belatedly decided that the global climate crisis necessitated action to reduce carbon emission caused by coal. He authorized the EPA to issue draft regulations requiring utilities to cut carbon dioxide emissions from existing coal plants by up to 30 percent by 2030. With climate change and coal's inherent dirtiness not exactly state secrets, I wondered why the president had waited until a difficult election year, when Democrats in coal states face difficult elections. But Obama's unerring sense of timing is a subject for another day. And these proposed regulations, though an improvement, only scratch the surface of what needs to be done. The thought occurred: Wouldn't the economic dislocations of a serious effort on climate change be more bearable if the economy were at full employment?