Perry,
I watched a show on TV some time ago about Global warming and they were in some foreign countries showing where they had dug and found evidence all over the world that the planet has gone through some very warm cycles. One of them said the water at the South Pole was warm enough to swim in but that the atmosphere would not support life as we know it. Then they went on with some long explanation of how all of the life including vegetation that had existed then had died and then it began to rot and form gases and slowly the carbon monoxide I believe it was caused some minor organisms to from in the ocean and as they increased and something else happened, oxygen was formed and went into the atmosphere. It was interesting but somewhat complicated to me as I am not a scientist and didn't really understand some of the technical terms they were using. But they ended the show in plain English with, the Earth has gone through warming and ice cycles in the past and will again in the future and all we may be doing is speeding up the next warming cycle by a few years. I am for doing all we can to clean up our messes, but that won't stop what is eventually going to happen again.
Ron
