Studies like this drive me crazy, travel to distant planets is a joke. Unless you have some magical new physics discovery in your back pocket Einstein's work puts the cabbash on travel past our own solar system. Besides wherever man goes destruction follows, why screw up some other poor planet.

We don't just need oxygen. We need 20% oxygen. 5% more and you would have extreme difficulty putting fires out and with 5% less we would have trouble getting a fire started. Our industrial system depends on this nearly exact percentage. Vary much from it and life gets much more difficult very quickly.

A simulation? Extrapolating out 5 billion years? Bwahahahaha...

NEAR TERM travel to distant planets is a joke, but we have hundreds of millions of years to get ready for this (supposed) oxygen event. NOTHING is beyond us on that time scale. A mere eye-blink of just three hundred years ago, you could not explain to most people what oxygen was.

This will surely be addressed in the Paris Accord.

One thing that this article fails to consider is human ingenuity. I find it hard to believe that we will simply let the Earth cook as the sun grows hotter. I can see in a billion years time, we'll have the technology to create a solar shade in space with a vast array of mirrors or some other type of material. Scientists have already proposed this sort of solution for climate change.

Before we throw in the towel, we have time to figure a lot out. The abstract one can read for free at the Nature Geoscience link (qv) did not provide nearly enough detail for me to guess/critique the idea, logic or methodology. The wiki article on the carbonate-silicate cycle was informative but overall unsatisfying https://en.wikipedia.org/wiki/Carbonate%E2%80%93silicate_cycle
I agree with Ron that such articles can seem to be warning about stuff with no way out (Sartre), but if humans keep poking their nose into science and don't throw in the towel, we'll find a way (Huh. Imagine science as a faith-based philosophy/religion ;). Even if the first 20,000 person leviathon space ship to Fomalhaut XII is passed by the FTL ship in 3854 CE (a regular meme for sci-fi).

Or, we can just move the Earth to a farther orbit: https://arxiv.org/abs/astro-ph/0102126
I proposed something similar but apparently more difficult, using the Moon in a bola fashion, here: https://www.quora.com/Before-the-Sun-goes-nova-could-we-use-the-Moon-in-a-bola-fashion-with-rockets-on-the-Moon-to-swing-the-Earth-to-a-farther-orbit-gain-a-few-billion-years-of-habitable-existence

Unfortunately, I doubt we will have to worry about running out of oxygen in several million years. Currently I don't see us lasting that long with oxygen the way things are going.

ROFL - what Tyler said.