Vintage carbon dioxide hysteria from smug left-winger Bill Maher, circa 2006: He accuses George Bush of "treason" for not warning us about CO2 as a "looming weapon of mass destruction"

YouTube - ‪Bill Maher- Global warming is our greatest problem.‬‏

[Maher:  "Global warming is not speculative...Failing to warn the citizens of a looming weapon of mass destruction, and that's what global warming is, in order to protect oil company profits, well that fits for me the definition of treason, and codified treason (applause)"]