Redux

Ali and Bruce....I agree that there is no consensus that human activity is the sole or primary cause of global warming.

The consensus among the scientific bodies of the world is that there is compelling data that human activities contribute to the adverse atmospheric buildup of heat-trapping greenhouse gases and that policies should be adopted and measures taken to reduce GHG emissions and minimize that impact.

If we wait until there is unanimity among the scientific community or the facts are completely irrefutable (rather than a minority position as is currently the case) to adopt sensible policies to lower GHG emissions, wont it be that much harder and more costly to reverse the trend?

Does anyone really believe, or is there any hard science to suggest, that spewing millions of metric tons of GHG from fossil fuels (primarily automobiles and power plants) into the atmosphere every year is healthy for the environment...or even neutral in its impact?

The extremist rhetoric of the Al Gore types doesnt help...but, IMO, the complete and utter denial of any responsibility for the increase in GHG emissions by the other side is worse.