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  5. There is still zero empirical evidence that anthropogenic...

There is still zero empirical evidence that anthropogenic production of CO2 is making any measurable contribution to the world's present warming trend.

Alexander Cockburn
Zero, World, Trends
"Is Global Warming a Sin?" by Alexander Cockburn, www.counterpunch.org. April 28, 2007.
There is still zero empirical evidence that anthropogenic production of CO2 is making any measurable contribution to the world's present warming trend.