If you're talking about climate change as the immediate salient issue, in practical terms (ie. taking politics into account), after three decades of deliberate

If you're talking about climate change as the immediate salient issue, in practical terms (ie. taking politics into account), after three decades of deliberate delay, it's too late. If you're talking about the underlying cause (the ideology of "economic growth"), a solution to that is even more distant. Superstitions die hard, as we've seen with the more venerable religions.