Environmentalist, inventor and futurologist James Lovelock (who was the first person to detect CFCs in the atmosphere) says humans may not be smart enough to prevent global warming. And he adds that saving the planet might require putting democracy on hold:

We need a more authoritative world. We've become a sort of cheeky, egalitarian world where everyone can have their say. It's all very well, but there are certain circumstances – a war is a typical example – where you can't do that. You've got to have a few people with authority who you trust who are running it. And they should be very accountable too, of course.

But it can't happen in a modern democracy. This is one of the problems. What's the alternative to democracy? There isn't one. But even the best democracies agree that when a major war approaches, democracy must be put on hold for the time being. I have a feeling that climate change may be an issue as severe as a war. It may be necessary to put democracy on hold for a while.