You know what's really good at direct air capture of carbon? Trees. And other plants. The cellulose structure of plants is very carbon-heavy. This carbon comes

You know what's really good at direct air capture of carbon? Trees. And other plants. The cellulose structure of plants is very carbon-heavy. This carbon comes primarily from the air. Wood used in construction lasts at least decades longer than the time it took to grow the tree. Timber framed construction can stand for centuries. Any organic matter can also pyrolyze: the release of volatile, flammable organic compounds when exposed to heat. If pyrolysis occurs in the absence of oxygen, the carbon does not burn. The gases can be burned very cleanly. The carbon is very stable and also forms the basis of excellent soil amendments (think fertilizer). When used as a soil amendment, it is often called biochar, but it is the same thing as charcoal. It is stable for centuries to small millenia in the soil. When used as a soil amendment, the carbon is not pulled into the growing plant life. Remember, plants get their carbon from the air. 1. Plant fast-growing stuff. Some trees are ridiculously fast, but bamboo probably wins for growth speed. 2. Create biochar (use the heat for something useful) 3. Bury biochar (actually mix with compost or some other carrier, don't just plant lumps of charcoal) 4. Plants grow faster