If the earth enters a state where most of the water is locked up in glaciers (‘snowball earth’), then it is unlikely that it will be able to exit it. Similarly, if it becomes too hot, it is again unlikely that it will return to what it is now. The earth can handle small disturbances in CO2 / temp, but a sufficiently large swing can lock us into one of the extreme situations.
True, however there were extinctions caused by far larger increases in CO2 than we have today and it didn’t happen. So at this moment it does not seem likely that we will achieve it this time.
If the earth enters a state where most of the water is locked up in glaciers (‘snowball earth’), then it is unlikely that it will be able to exit it. Similarly, if it becomes too hot, it is again unlikely that it will return to what it is now. The earth can handle small disturbances in CO2 / temp, but a sufficiently large swing can lock us into one of the extreme situations.
True, however there were extinctions caused by far larger increases in CO2 than we have today and it didn’t happen. So at this moment it does not seem likely that we will achieve it this time.
Ah, fair. (Unless we melt the permafrost, then all bets are off.)