The recent report by the Intergovernmental Panel on Climate Change said the need to remove vast amounts of carbon dioxide from the atmosphere is “unavoidable” if the world’s climate goals are to be met. Enhanced rock weathering, a process in which rocks such as basalt are ground up to increase their surface area and accelerate the natural reactions through which they absorb carbon from the air, has already been found to be a potential large-scale option for those removals.