I haven't written much about the new IPCC report here, largely because it doesn't say much you don't already know: The Earth is getting warmer and human activities are to blame for a good chunk of that warming. So what are we still arguing about? In a new column for Ensia magazine, I talk to climate scientists who make the case that the debate is less about science and more about individual values that affect how different people want to tackle the problems that the science exposes. (And, even, how big different people think those problems really are.) While the fact of climate change is difficult to refute, there's plenty of room for legitimate disagreement (and reasonable discussion) about values and the political policies that they shape.