There’s a company called Verdox which has developed a system that can absorb CO2 at ambient levels (~400ppm) and then discharge a stream of pure CO2. Presumabl

There’s a company called Verdox which has developed a system that can absorb CO2 at ambient levels (~400ppm) and then discharge a stream of pure CO2. Presumably one could chain that system to this system to produce solid carbon from atmospheric CO2. Put it out in the middle of nowhere, where energy storage/transportation would be uneconomical, like a desert, and power it with the sun, and maybe you’d have a decent carbon sink where otherwise there’d be nothing.