I still wonder if most of the human impact on climate is not the CO2 but the water vapor put out by planes. See the post 911 weather, and more recently around h

I still wonder if most of the human impact on climate is not the CO2 but the water vapor put out by planes. See the post 911 weather, and more recently around here a lot of people know what "covid sky" means. The sky was very clear and blue during the early shutdowns. If this hypothesis is correct then low-carbon fuels (say methane) are the wrong answer. Low hydrogen fuel would be better. Bring on the coal fired airplanes!! Sounds so silly, but hey...