Climate change optimism

Jonathan Chait in New York magazine claims there's reason for optimism on climate change (The sunniest climate-change story you've ever read):

Guess what everyone’s been missing in the middle of their keening for the dear, soon-to-be-departed Earth? There is good news. And not just incremental good news but transformational good news, developments that have the potential to mitigate the worst effects of climate change to a degree many had feared impossible. Those who have consigned the world to its doom should reconsider. The technological and political underpinnings are at last in place to actually consummate the first global pact to limit greenhouse-gas emissions. The world is suddenly responding to the climate emergency with — by the standards of its previous behavior — astonishing speed. The game is not over. And the good guys are starting to win.