Humans today have differing views on what we have done to this planet, and what we might do to fix things. A commonly held view, however, is that whatever damage we have done is something that can be corrected by concerted action. Many don’t think that global warming is actually occurring, while others think that things are warming, but that humans haven’t caused it. Many think that sea level rise is the main unwanted consequence of global warming. And nearly all think that if we cut back on greenhouse gas emissions, we’ll cut back on warming. It is this last belief that I want to address here. We are right to believe that greenhouse gases result in warming. Greenhouse gases, such as water vapor,…