There is exactly one technology that can affordably bind CO2 at scale and that is plants. We are just very, very far from measures to keep that carbon from rees

There is exactly one technology that can affordably bind CO2 at scale and that is plants. We are just very, very far from measures to keep that carbon from reescaping back. And rightfully so, because burning carbon freshly captured by plants is infinitely less bad than burning carbon that has been nicely stashed away for geological timespans (the carbon captured by contemporary plants would recycle back into the air anyways, energy use is merely a minor latency reduction). Sequestration at burn site might be an improvement on that, but that still doesn't answer the question of where to put it. Geologically buried hydrocarbons are really hard to beat at keeping carbon out of the atmosphere, that is unless there happens an industrialization event...