When we study technology transitions of the past – the shifts from horses to cars, from cesspools to sewers, from traditional farming to intensive agriculture – we can see how they were enabled and accelerated by government policy. Coordinated action by groups of countries could accelerate change even more – through faster innovation, larger economies of scale, and level playing fields where needed. International cooperation of this kind could dramatically accelerate low-carbon transitions in each of the greenhouse-gas-emitting sectors of the global economy. Until now, it has barely been attempted.

At COP26, countries representing 70 per cent of the global economy agreed to work together to cross the tipping points where clean technologies outcompete the fossils in each greenhouse-gas-emitting sector of the global economy. This could mark the start of a new era for climate change diplomacy. Success will need support from all sides.

At COP26, countries representing 70% of the global economy agreed to work together to cross the tipping points where clean technologies outcompete the fossils in each greenhouse gas emitting sector of the global economy. This could mark the start of a new era for climate change diplomacy. Success will need support from all sides.

When we study technology transitions of the past – the shifts from horses to cars, from cesspools to sewers, from traditional farming to intensive agriculture – we can see how they were enabled and accelerated by government policy. Coordinated action by groups of countries could accelerate change even more – through faster innovation, larger economies of scale, and level playing fields where needed. International cooperation of this kind could dramatically accelerate low-carbon transitions in each of the greenhouse-gas-emitting sectors of the global economy. Until now, it has barely been attempted.