Chris Matthews does it again: Yesterday's show featured a discussion of the latest report on climate change with a climate scientist who believes that catastrophic anthropogenic global warming (CAGW) is happening (Michael Mann) and ... a Republican consultant (who kept saying, "I'm not a scientist."). Matthews's mission is to make sure his viewers never have to encounter a credentialed climate scientist with evidence against CAGW -- there are such -- so he can maintain the pretense that anyone who denies CAGW must be an anti-science religious fanatic.

Worth reading: Alex Cockburn's "Is Global Warming a Sin?"