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I suppose if you are in favour of more aircraft then its a strange way to tackle global warming as the contrails prevent or reduce the amount of solar radiation as the link implies.
I would be more inclined to another argument that pollution from aircraft falls to the ground as we know carbon is heavier than air. It is no surprise that Asthma has doubled in 10 years and without knowing actual reasons you could use aircraft pollution as a major candidate. The correlation ties up even though the motor car has taken much of the flak.
The vested interest of the aviation industry will make sure the truth is never told.