Christiana Figueres and Tom Rivett-Carnac know the climate crisis from inside the machine. As the UN’s Executive Secretary and Chief Political Strategist during the Paris Agreement, they helped broker the closest thing we have to a planetary lifeline. Their book emerges from that crucible, insisting that what they call “stubborn optimism” must win over the narcotic of ecological despair. It is less a cheerleading manual than a clear-eyed reckoning with two futures: one hellish, the other hard-won.

We know the hellish version: a 2050 in which we failed to act. The air is toxic, seas change the shape of coastlines, cities become deserts, and forced migrations sweep across the globe. The imagery is suffocating, and deliberately so. It echoes the fatalism that dominates much climate storytelling today—a genre of doom that anaesthetises as much as it warns.

But then comes the counter-vision: a 2050 where humanity took itself in hand. The air is fresh, cities buzz with life and greenery, and economies thrive on renewable abundance. Transition was difficult, but liberating: it’s not utopia, but it is survivable, and charged with possibility.

The strength of the book lies in this friction between terror and hope. Figueres and Rivett-Carnac don’t try to ignore the abyss. Instead they argue that optimism is not naïveté but strategy: the sober, disciplined choice to believe that change is possible, to acknowledge that positive that shifts are already underway – and that history turns on the will of small, committed groups. The Future We Choose doesn’t let its readers off the hook, but —it dares you to step into the future with open eyes, in the knowledge that despair is a luxury we can no longer afford.