We live in the happiest, healthiest and most peaceful era in human history, writes columnist George Monbiot in the UK Guardian. But due to climate change it will not last long, he argues. "Like every impending disaster (think of the rise of Hitler or the fall of Rome), this one has generated a voluble industry of denial. Few people are now foolish enough to claim that man-made climate change isn't happening at all, but the few are still granted plenty of scope to make idiots of themselves in public."