My thoughts exactly. One can say that man could not have any impact on climate change, but it's not a claim one can make based on evidence.

If most of the global warming is thought to be due to carbon dioxide emissions, then any effect man had prior to the industrial revolution would be negligible. I do not believe that one can say the same thing about modern man. Admittedly, by the time the real evidence comes in, then I suspect it'll be too late to do much about it.

Bears, beets, Battlestar Galactica.