evidence: Empirical evidence that humans are causing global warming [...] It still surprises me when I hear skeptics claim there is no evidence that we're causing global warming. The evidence is there in the peer reviewed literature. What they're really saying is they haven't bothered to look. So to make things easier for everyone, here is the evidence that humans are causing global warming. It's not based on theory, climate models, faith or political ideology but on direct, empirical observations. The line of evidence is as follows: [...] What about claims that it hasn't warmed since 1998. Could we be experiencing global cooling? Not at all. How do we know? Think about what global warming really is. The planet is accumulating heat. More energy is coming in than is going out. Is this energy imbalance still occuring?