It's all moot.
The most pressing issue facing aviation is where to land once sea levels rise. More than a few major paddocks will be under water before we run low on oil.
ABC Four Corners last week brought to our screens the story of
global dimming, an effect highlighted by the absence of contrails over continental USA in the three days post September 11 2001. Global dimming has been artificially keeping a lid on global warming, and as the program
transcript states, "
by about twenty thirty we could have a global warming of exceeding two degrees, and at that point it's believed the Greenland ice sheet would start to melt in a way that you wouldn't be able to stop it once it started it, it would melt. Take a long time to melt but
ultimately it would lead to a sea level rise of seven or eight metres."
2030 ... not so far away folks.