Many climate activists are often focused on pledges to get to net zero emissions by some distant date or insist that every new energy source must be entirely green.

But Fareed Zakaria says that we need to cut emissions now, not promise to do so by 2030. And the only way to do it now, and at scale, is to make some tough choices and trade-offs, he says.

We do not have green technology, like clean nuclear fusion and long-duration battery storage, that can fully replace fossil fuels today. We may get them — in 10 or 15 years, perhaps, if we are very lucky, says Zakaria.