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I think some of the skeptics are not understanding what is being said and that their position is the man is not repsonsible for all of the changes and that those concerned about global warning are not right because they blame man alone. The point seems to me to be that you hit a tipping point and before reaching that we have ebbs and flows and it is simply weather and fluctualtions and we have cycles and this is true but when the populartion reaches a certain point those factors that are caused are no longer sustainable and we are fast reaching that point if we are not already there. Rick Perry, if he truly believes what he has just said should hold a position as head of the energy department plain and simple