It's a wash, since most of us use AC at some point. You work to make things better FROM the context you are in. As for standards, that's what I was getting at. Is freon 3k+ times more damaging to Man's climate (I way this because Earth doesn't care what equilibrium it's at) when you factor in its dramatically shorter persistence and considerably smaller emission?So we should not hold futurecurrrents to his standards? Shouldn't we expect him to walk his talk.... and not be in the business of peddling a gas over 2000 times more dangerous to the environment than CO2.