Global warming is only a problem for a biosphere. Advancements in AI may mean that civilization relies less and less on a biosphere.
That's the general pattern of technology. It makes us rely less on the biosphere, and in turn makes us more dependent on it. But since it is destructive, it also actively destroys the biopshere, which is the way technology grows 'organically'. It's a disease.
A robot civilization? Because last I checked, humans were passed off said biosphere.