“Carbon dioxide removal, or CDR, is sometimes seen as a subset of geoengineering — deliberate, planetary-scale actions to cool the Earth — but it’s actually quite different. Geoengineering strategies are risky, imperfect, Carbon dioxide removal is more akin to recycling waste than to playing God with nature. controversial, and difficult to govern. The most-discussed geoengineering technology, solar radiation management, alleviates a symptom of the climate problem (warmer temperatures) but does nothing to address the cause (rising atmospheric concentrations of CO2). What’s more, geoengineering as a climate response is stuck because governments have declined to provide more than token funds for research, and there’s no business model to support it.
Carbon dioxide removal, by contrast, targets the root cause of global warming. It doesn’t create global risks. It’s being financed by the private market, and it’s more akin to recycling waste than to playing God with the weather.
Despite widespread skepticism in the scientific community, three startup companies are betting that they can make money by recycling CO2, and thereby cool an overheating planet.”