Vox: Under a new UN deal on climate change agreed to in Peru, every single country has agreed to submit a plan next year for limiting the growth of their greenhouse-gas emissions.
That's a first. Past climate deals only targeted the emissions of wealthier nations and exempted fast-growing countries like China and India.
But there are huge caveats. The plans will be voluntary -- countries can promise to cut as much or as little as they want. And there's no rigorous outside review of the plans. (The...