Skip to about 3:00 to get to the meat of it. Assuming you can stand a full meal deal of idiocy. If you didn't already know about the stupidity of R members of Congress -- on the Science committee, no less!! -- be prepared. It's taking stupid to transgalactic levels.
I've actually seen the whole damn hearing. The guy who asks about levels of CO2 that are toxic to humans, Steve "I'm the dumbest guy in Congress next to Louis Gohmert" Stockman, never gets it. Never acknowledges that what's happening over the last few decades has nothing to do with a phenomenon that takes a hundred thousand years. Dana "Hey-wait-a-minute-I'M-the-dumbest-guy" Rohrabacher thinks he had a major gotcha. Because he got the science guy to admit that 400 ppm is, in fact, NOT harmful to human health. Per se. Dontcha know.
Note the smug self-satisfaction on the face of the guy who points out that melting ice in a glass doesn't raise the level. And, no, the science guy didn't have time to point out the obvious, the way Jon Stewart did.
This is what we're dealing with. These are the people that represent today's Republican party, the ones happily elected by their teabagging Foxolimbeckifed bought-and-paid-for-by-the-Koch-brothers deliberately-and-willingly-deceived voters. This is why the 400,000 people who marched Sunday were wasting their time. They're agitating for the obvious. Those suckered voters are being kept oblivious. The people in Congress who have the power to block climate change action are the perfect combination of on the take, in the tank, too stupid to understand, and too greedy to give a shit.