The conversation around climate change is so predictable. It's either depressing doom, science denialism, or ambitious summits that don't achieve much. Can't anyone think outside the box?

Quico Toro does. He's the Director of Climate Repair at the Anthropocene Institute, a former journalist who's written for the New York Times, Washington Post and The Atlantic, and a Venezuelan-born thinker shaped by his homeland's slide into authoritarianism.

He is deeply worried about climate chaos but believes the comfortable consensus about carbon must be shattered. There has always been a fringe of geo-engineers and techno-tinkerers with wild schemes to hack the sky or scrub the atmosphere. While most of those ideas deserve the scepticism they get, Toro's plan could, he hopes, literally save the world.