azgreg, is that you?Here's my quick take before this thread spirals out of control. Are we warmer now (on average) than we were at the beginning of recorded temps 180 years ago? sure we are. My point of contention with the AGW zealots is they feel that the human production of co2 is the sole cause of 100% of the warming when in fact we were warmer than we are now further back in time. They take little notice that we are still coming out of the little ice age. Does this mean that we can just pollute all we want? No. We should still do what we can clean it up.