August tied July as the hottest month on record, according to NASA data released this past week. This year we’ve seen half a dozen thousand-year floods, along with epic droughts. Mother Nature is telling us there’s a problem. The long-term trend lines are clear. Yet we have a Republican presidential nominee who has repeatedly called climate change a “hoax.” “Perhaps there’s a minor effect,” Donald Trump told The Washington Post’s editorial board, “but I’m not a big believer in man-made climate change.” So it goes in the madhouse of the climate debate. Even as the evidence has become unmistakable, and even though the alarm has been sounded several times, public policy has been paralyzed — sometimes from ignorance, sometimes from uncertainty, but often from a campaign of deliberate misinformation. Here are some of the worst offenders.