Note to Chris Matthews: when seeking to slam Republicans for their supposed ignorance of science, try not to expose your own. On Tuesday's Hardball, Matthews—mocking the Republican congressmen vying for the chairmanship of the House Science Committee— committed this whopper: "As we all learned in grammar school—young people watching—trees absorb carbon monoxide."
As even an MSNBC host might know, carbon monoxide is a toxic gas produced when there is insufficient oxygen to permit complete oxidation. Think running car in closed garage. The greenhouse gas to which Matthews was presumably referring—and which trees are famous for absorbing—is carbon dioxide. Perhaps it was just a slip of the overworked Matthews' tongue, but when it comes to a guy who likes to jump down any available Republican throat, turnabout is fair play. View the video after the jump.