Oh my! I have breathing plans all weekend!!!
Assuming the oxygen goes away within 20-30% of the earth’s remaining life, wouldn’t that be around 1.5 billion years from now? WOW, as If I didn’t have enough to worry about already!
Well duh! The Greenies say we’ve only got a bit more than 8.5 years til the end of life. So who gives a rip about a few billion years in the nonexistent future?