Climate change, specifically global warming, has been associated with increases in atmospheric CO2 levels. Fixation of this airborne carbon dioxide and subsequent removal from the atmosphere is possible, though impractical due to little or no economic incentive. Hepburn et al. counter this position with viable utilization of captured CO2 that yield decent economic return. Some of these utilities include chemicals (methanol, urea, plastics), fuels (methanol/methane), microalgae products (biofuels, biomass, aquaculture feed), and concrete and various building materials1. In addition to these ventures, Hepburn et al. also lay out the probability of re-release of carbon dioxide from these various applications1.
(1) Hepburn, C., Adlen, E., Beddington, J. et al. The technological and economic prospects for CO2 utilization and removal. Nature 575, 87–97 (2019) doi:10.1038/s41586-019-1681-6