the geological history of the planet shows major planetary climate changes have never been driven by a trace gas
the geological history of the planet shows major planetary climate changes have never been driven by a trace gas
climate change denial:658
rennie 2009: "claim 1: anthropogenic co2 can't be changing climate, because co2 is only a trace gas in the atmosphere and the amount produced by humans is dwarfed by the amount from volcanoes and other natural sources.