Pre-industrial CO2 levels were about the same as today
Ball, Tim. 2008. Pre-industrial CO2 levels were about the same as today — How and why we are told otherwise. Canada Free Press, December 10, 2008
Full text [here]
Ball, Tim. 2008. Pre-industrial CO2 levels were about the same as today — How and why we are told otherwise. Canada Free Press, December 10, 2008
Full text [here]