Ken, there's broad agreement even among skeptics that CO2 is a greenhouse gas, that fossil fuel use is causing its level to rise in the atmosphere, that the earth is warming, and that CO2 might be partly responsible.  What has NOT been convincingly demonstrated is that anthropogenic CO2 has any greater effect on climate change than solar activity, ocean oscillations, cloud cover variation or any number of other variables that climate models don't reliably account for.  The fact that so many 'climate scientists' say otherwise says more about the state of government-funded science than it does about the actual state of the climate.