Don't hold your breath waiting to hear about this in the news. And don't tell anyone, lest the word gets out, and it turns out to be your last breath, that is!
It all started out several years ago when there was talk about making cars that run on compressed air. I asked how much of the atmosphere would be sequestered if a billion people has tanks with air at 20K Atmospheres pressure in them. Haven't seen any talk, to speak of, about air cars since.
Now there is a problem with rich people hoarding oxygen, creating a shortage of tanks for hospitals. One wonders how soon the O2 level in air we breathe will start to diminish.
And how much oxygen is absorbed by ions released by jet aircraft as persistent trails in the sky? Why all the buzz about CO2 and never a peep about OXYGEN???