It is unfortunate that Climate Change is one of those controversial issues in the US, and the world in general, which frames the argument in moral terms. The other issues that come to mind are Gay Marriage, Abortion, and Immigration Reform. Moral issues unfortunately are difficult to decipher, and many political theorists would agree, belong outside of the realm of political discourse. Thousands of years of history tells us that when issues are framed as moral imperatives, the issue never gets settled. Just think back to the protestant reformation, for starters. Or the moral issues raised by the idea the earth revolves around the sun, rather than the inverse arrangement.
Energy In = Energy Out. The first law of thermodynamics. Just because the graph goes down a little, doesn't mean its time to cheer global cool. Unfortunately, these are laws of physics. When there is too much heat trapped by atmospheric gasses, we find another physical law that should make us uncomfortable.