"The big ideological defeat hidden by environmentalism" at Samizdata, who quotes Will Wilkinson:
Climate eschatology really is the ultimate in big lie crisis politics. The far-left has failed so comprehensively to make the case for its vision of society and economy that the only thing left to do is to brazenly and repeatedly assert that the world will literally collapse unless we implement this otherwise indefensible vision.
and
I think the point is that the clock really is ticking. If we don't "do something" soon, we'll probably see that we don't really need to do anything really dramatic, and then the window for radical social change will be closed. So I expect the volume to get much louder.