I don't (yet) understand the chemistry behind extracting solid carbon from the air for cheap, but I have reason to believe it's possible: https://www.nature.com/articles/s41467-019-08824-8
Another aspect of this is that it could maybe exploit modern monetary policy. Price of bricks getting too high? Maybe 'ease' a few more into circulation by buying them with new dollars.
Poked around a bit more.
1 ton of carbon bricks ~= 100 gallons, about the size of a nice fish tank.
5.5 billion tons of carbon ~= Mt Everest. That's a lot of bricks.
We add ~25 gigatons of carbon into air yearly. ~28 Mt Everests.
Scale is staggering.
We'll probably have to drop the bricks into the ocean.
Or maybe use all those bricks to build sea walls to protect our coasts.
FWIW, I've always assumed we'd pump carbon back into the ground. I'm liking the idea of making bricks.
I don't (yet) understand the chemistry behind extracting solid carbon from the air for cheap, but I have reason to believe it's possible: https://www.nature.com/articles/s41467-019-08824-8
Another aspect of this is that it could maybe exploit modern monetary policy. Price of bricks getting too high? Maybe 'ease' a few more into circulation by buying them with new dollars.