Aircraft condensation trails criss-crossing the sky may be warming the planet on a normal day more than the carbon dioxide emitted by all planes since the Wright Brothers’ first flight in 1903, a study said on Tuesday.
It indicated that contrails – white lines of vapour left by jet engines – also have big effects by adding to the formation of high-altitude, heat-trapping cirrus clouds as the lines break up.
The findings may help governments fix penalties on planes’ greenhouse gas
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