With the recent advances of turning CO2 into other substances, such as propane, should we be focusing more on closing the carbon cycle and simply be producing fossil fuels from the waste products of yesteryear?
Naively, it feels like we understand C, O and H, better than we understand some of the rare metals we're now introducing in the name of climate change.
Like how deadly they are, microplastics and pollution from tire/road wear, noise in residential areas, the huge waste of area, expensive upkeep of infrastructure, how they make cities less inhabitable etc etc.