Or, at least, so says James Hansen of NASA. According to the (London) Independent, he and his colleagues "implicitly criticise" the UN's IPCC for underestimating the coming climate disaster. Dr. Hansen was one of the few scientists that Al Gore mentioned by name in an Inconvenient Truth. He is also the one who calls press conferences to talk about how he has been "muzzled." James Hansen endorsed John Kerry for president in 2004.