In the first of 15 manifestos written for the Dezeen 15 digital festival celebrating Dezeen's 15th birthday, Es Devlin imagines looking back from 15 years in the future at the positive progress made since the COP26 climate conference.
In her vision, world leaders agreed upon a raft of measures to reduce emissions and improve life in cities, including replacing cars with trees.
Meanwhile, architects and designers have all signed an oath promising "to do no harm to the planet as they practice".
The Dezeen 15 festival features 15 manifestos presenting ideas that can change the world over the next 15 years. Each contributor will also take part in a live video interview.
See the line-up of contributors here and watch Devlin's video interview live on Dezeen later today.
Swap cars for trees
Imagine a possible future. It?s 1 November 2036 and every city centre on the planet has swapped parked cars for planted trees. Every city centre has been pedestrianised and optimised for cycles.
Every parked car has been replaced with a planted tree. Every car park has become a forested park. Every new and remodelled building has been designed according to vertical-forest principles with two trees planted for every human inhabitant.
Tree canopy shade has improved energy efficiency by providing shading from the sun and insulating against cold. All buildings are now powered by renewable energy. People and goods move around the city centres along tree-lined pathways on foot, on cycles, ...