It’s 2119 and the tide has turned for global warming. The concentration of carbon dioxide in the atmosphere is returning to safe thresholds on its downward trend towards pre-industrial levels. Nations came together to almost fully decarbonise the now buoyant world economy, supported regions that bore the brunt of global warming and invested in programmes to restore the Earth’s biosphere. The global effort far exceeded the ambition, scale and optimism of the Apollo lunar missions.
