There are several questions to global warming. Do we have any influence over what's happening? If so, is it positive or negative? Are higher temperatures or lower temperatures more desirable? What can be done? What -should- be done? Is there any line that we shouldn't cross in trying to correct what's going on?

Now, fighting pollution? I'm all for fighting pollution. Air that's easier to breathe and clean water are both great goals. But the idea that something produced naturally by all animals on earth (including humans) is a pollutant is troubling to me.