The IPCC draft, which has found its way into my possession, contains a lot more unknowns than knowns. When you get down to specifics, the academic consensus is far less certain. The draft gives even less succour to those seeking here a new mandate for urgent action on greenhouse gas emissions, declaring: "Uncertainty in the sign of projected changes in climate extremes over the coming two to three decades is relatively large because climate change signals are expected to be relatively small compared to natural climate variability". --Richard Black, BBC News, 13 November 2011
