Former New York City Mayor Michael Bloomberg is plunging $500 million into an effort to close all of the nation’s remaining coal plants by 2030 and put the United States on track toward a 100% clean energy economy. The billionaire Bloomberg’s investment in the Beyond Carbon initiative marks the largest ever philanthropic effort to combat climate change, according to the mayor’s foundation. The organization will bypass the federal government and instead seek to pass climate and clean energy policies, as well as back political candidates, at the state and local level.