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RE: CO2 has no effect on global warming.
and not flying airplanes for 3 days over America had measurable impacts on surface temperatures.
and not flying airplanes for 3 days over America had measurable impacts on surface temperatures.
bogus
https://www.csmonitor.com/Environment/Bright-Green/2010/0201/Airplane-contrails-and-their-effect-on-temperatures