New York Times: Who would have thought the United States would one day be a leader in cutting greenhouse gas emissions? This is the nation, after all, where a former chairman of the Senate committee on the environment, James Inhofe, wrote a book about global warming called The Greatest Hoax. This is where a presidential election took place not six months ago in which climate change barely merited a mention, buried under an avalanche of promises to dig for coal and drill for oil. Fuel economy performance for...