We are currently exploring how to build a desk-sized carbon dioxide removal machine: a technology that may, in the future and at industrial scales, may be used to remove gigatons of CO2 from the atmosphere. Our anticipated design will allow for both bike- and solar-generated power inputs as well as creative outputs with the captured carbon. By inviting participants to pedal for carbon removal, and by linking carbon removal to solar surplus, participants will be able to tangibly explore the technology’s relations to time, energy, and climate justice. Furthermore, by turning captured CO2 into sculptures we will engage questions of storage and utilization through social art practice.