PD
heating that cold, 35,000' air to 70 degrees .... it's heated to 100s of degrees by compression inside the engines, then COOLED DOWN AGAIN to cold, but then WARMED UP again to only 70.
Is this what they mean when they say that global warming has gone to local warming?
It is STILL the case that I am more likely to die on the roads. When driving to an appointment this morning (a funeral as it happens) on the motorway, I was overtaken by a car who then realised that they wanted the next exit. They went from the outside (3rd) lane, across the 2nd and the 1st and went up the exit road at 70mph with no signal, or indication. Just swerved across all the lanes. THAT driver was drinking air at only a few hundred feet above sea level
and could have killed and maimed several of us.
Fortunately, everone else - consuming the same air - was being watchful and we all avoided that twit. That's the job of driving.
Perhaps the drinking of rarefied air helps pilots concentrate better.
