Inevitably, this will trigger the usual controversy. Some will warn that, if anything, the report underestimates the dangers of imminent global apocalypse; others that the whole thing is a series of model-driven assumptions from an organisation whose credibility has been called into question on several occasions. Some of the IPCC’s claims have been shown to be exaggerated, including a forecast that the Himalayan glaciers would disappear by 2035. Moreover, global temperatures have failed to follow the upward path predicted. As a result, there is considerable reluctance around the world to make the fundamental adjustments that we are told are required to stop the most dire prophecies coming true.