That's an interesting point about temperatures, but I don't think that's the main concern we should have about global warming. People living in Arizona don't se

That's an interesting point about temperatures, but I don't think that's the main concern we should have about global warming. People living in Arizona don't seem to be significantly worse off than people living in North Dakota. And a few degrees will not change much in terms of heating and A/C. I think the real worry of global warming is what it will do to ecosystems.