The IPCC says that limiting global warming to 1.5°C requires not only big emissions cuts, but also removing CO2 from the atmosphere at a scale that has never been tried before. Many CO2 removal approaches have been proposed, including nature-based solutions, and technological approaches. But none are ready to be deployed at the scale and the speed necessary, and in all cases would bring risks, costs, and trade-offs, as well as potential benefits. There is currently insufficient international governance to manage the difficult decisions ahead. What role can young people play in governing large-scale CO2 removal?