I hope I convey my point probably, but why do planes go so many thousands of feet in the air? Is it faster that way, or could they achieve similar flight times at a lower altitude?
Does it have something to do with the curvature of the earth?
In: Engineering
* Quieter for people on the ground.
* Thinner air for better ‘gas mileage.’
* In an emergency, more time to correct before going crashy, crash
* You can fly over the top of a lot of the bad weather
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