The sun will start increasing in luminosity within a billion years, at which point it will be intense enough to cause rocks to begin soaking up CO2 to a point where photosynthesis will become difficult, and the planetary food chain will collapse.
The hour is much later than we think. Maybe another supercontinent cycle or so?
phdepressed@sh.itjust.works 6 months ago
The real worst-case that you don’t hear in media is turning Earth into a situation similar to Venus. At that point there’s a real small chance of even extremophiles much less anything complex. Of course the planet will still rotate and continue orbiting the sun but earth-based life would probably only exist in some of our space junk like the poop bags Apollo left on the moon.
wizardbeard@lemmy.dbzer0.com 6 months ago
Because that level of environmental collapse is many lifetimes away, if it’s coming at all.
One of the benefits of humans dying out, which everyone seems so sure about, is that as humanity dwindles, so too will the continued damage to the ecosystem.
May not stop it, but would certainly hamper the acceleration of things.
phdepressed@sh.itjust.works 6 months ago
Unfortunately, not super relevant. The earth->Venus scenario is about a positive feedback loop. So stopping our emissions after that tipping point doesn’t help.
HubertManne@kbin.social 6 months ago
Yeah though we are really good at surviving as long as there is anything at all to survive on.