I recommend Joseph's answer here: https://www.quora.com/Why-cant-engineers-fix-the-low-level-of-humidity-in-planes-during-flights https://www.quora.com/Why-cant

I recommend Joseph's answer here: https://www.quora.com/Why-cant-engineers-fix-the-low-level-of-humidity-in-planes-during-flights https://www.quora.com/Why-cant-engineers-fix-the-low-level-o...