"On global warming, public policy is where the science was in 1998. Due to new evidence, science has since moved off in a different direction. The UN science body on this matter, the IPCC, is a political body composed mainly of bureaucrats. So far it has resisted acknowledging the new evidence. But as Lord Keynes famously asked, "When the facts change, I change my mind. What do you do, sir?" - Dr David Evans explains. LINK