The usual caveat: I use this data set just to cut through one layer of disingenuous counter-argument from the right. It’s isn’t necessarily the best or most representative, not that it matters. It is getting warmer, we’ve known that for years and we’ve known why for years. I’d challenge anybody to point out a major area of modern political policy where the underlying facts and evidence are this strong. Not crime, not economics, not foreign policy, not taxation, not even healthcare have the same level and quality of evidence behind the policy debate. If you think we don’t have enough evidence yet to take action on this topic but claim the facts back you up in some other policy area you are frankly talking bullshit.