The first great Greenie adventure into climate processes was the Montreal protocol which "saved" the ozone in the atmosphere over the Antarctic. Monkeying around with our refrigerators and spraycans was supposed to shrink the ozone "hole". Many years later, however, there is no evidence that the hole has shrunk. It just oscillates as it always did. The unfalsifiable Greenie way out of that is to say that the hole will shrink one day if we are patient enough -- a bit like waiting for the State to "wither away" under Communism.