you say that's false. >> yes. >> hockenberry: false. >> false. >> hockenberry: and if most of the climate scientists believe that statement, they are deluded? >> yes. >> hockenberry: and you're seeing something they're not seeing? >> yes. >> hockenberry: so it's 97% of them and one of you? >> oh, well, you can put it that way if you like. but i don't think that's the way it works. there's hundreds of us-- hundreds, thousands of us. look, 31,000 scientists and engineers signed a statement to the contrary to what you just read. >> hockenberry: the oregon petition? >> yes. >> hockenberry: the 14-year-old petition is not exactly an exclusive club. a bachelor of science degree is all it takes to get you on the list. this document, skeptics claim, counters the scientific consensus on global warming. now, are they all scientists? >> yes. one-third of them have ph.d.s. look, they are not specialists in climate. >> hockenberry: well, some were celebrities and friends... >> eh... >> hockenberry: it's a time- honored tactic by the skeptics: authentic-looking documents and reports that don't stand up