5C above the previous record in some places.<p>But I still have friends who don't believe it, or don't believe it's got anything to do with humans.<p>It's an interesting study in epistemology. How do you as a layman know what sources to believe? All sources are full of words you won't have heard of, like when you go to a French restaurant. You can't appeal to authority, because that's not evidence. If you start arguing with people who say the evidence is doctored you're both playing detective, not scientist, and the conversation descends into incentive studies (big oil vs big academia).<p>Talking to deniers who believe in the null hypothesis of natural variation takes you down a statistical rabbit hole. I can't actually summarise a statistics class in a few sentences, regardless of what they think about AGW. Either side will just hand wave and tell me the stats say what they want.