We may discover some unrecognized phenomenon that regulates global temperatures (akin to the under-appreciated sociological phenomenon that increased wealth and access to birth control encouraged smaller families). But it's risky to assume that's going to come to pass when the failure mode is significant death of much of the human population if no such phenomenon emerges (and we have multiple examples in our solar system of planets that once could sustain life but are now not fit for human habitation due to global-scale climatological shifts, so the evidence we have suggests no such process exists).