"I have been dismayed over the bogus science and media hype associated with the (dangerous) human-induced global warming hypothesis. My innate sense of how the atmosphere-ocean functions does not allow me to accept these scenarios. Observations and theory do not support these ideas."

Professor Emeritus William Gray, Colorado State University, 2006.

http://en.wikipedia.org/wiki/William_M._Gray (some interesting stuff on the dispute page)

http://www.exxonsecrets.org/wiki/index.php/Deniers:Scientists:William_M._Gray