This is something that the Nobel Commitee recoginized when it awarded the 2007 Nobel Prize to the IPCC. Someone who apparently does not share this view is one Blaine Luetkemeymer, the representative of the 9th district of Missouri in the United States Congress. He thinks the IPCC is “international junk science.” Accordingly, he just introduced a bill that would block the United States from funding the IPCC.
For kicks, his press release says: “Luetkemeyer’s legislation would prohibit U.S. contributions to the IPCC, which is nothing more than a group of U.N. bureaucrats that supports man-made claims on global warming that many scientists disagree with.” (emphasis mine)
It would seem that Mr. Luetkemeyer’s know-nothingism extends to English grammar.