Half of Republicans back carbon limits, poll says "Six in 10 Americans, including half of all Republicans, said they support regulation of carbon dioxide pollution, although they weren't asked how. Nearly half of Republicans said the U.S. should lead the global fight to curb climate change, even if it means taking action when other countries do not. And majorities across party lines said environmental protections "improve economic growth and provide new jobs" in the long run, a popular Obama administration talking point." [snip] The AP-NORC Center survey of 1,578 adults was conducted online Nov. 20-Dec. 1, using a sample...