“Who believes politicians paid by ExxonMobil instead of scientists, doctors and conservationists? Gullible people who want to believe. That’s what makes hoaxes work.” The historian Steve Hochstadt reviews the history of science hoaxes and compares them to the current “global warming hoax.” There is an important difference between the two: the previous hoaxes were debunked by scientists, whereas the current “hoax” is supposedly being perpetrated by the scientific community. This fact in and of itself should invite skepticism of the claims of those who cry “hoax.”