Create an Africa-sized algae bloom with iron and urea fertilization, in the middle of the waste-plastic zone in the north Pacific gyre.
Krill eat the algae. Baleen whales eat the krill and the plastic. Then we train/drug the older whales, so they swim far away from the continental shelf, dive deep, and commit suicide on the bottom. We solve two problems with one stroke. (Then the gorillas just freeze to death when winter comes.) ~
I think the only workable schemes for active carbon sequestration involve artificially weathering calcium and magnesium containing oxide rocks to expose more surface area, and turn them into carbonates. That has to be done on a scale that far exceeds the entire global demand for concrete. Like building a 1:1 scale replica of the white cliffs of Dover, every year, for no economically exploitable reason. Grind up olivines, pyroxenes, calcium-rich plagioclases, periclases, perovskites, spinels, etc. into sand, eventually get chalk.
Algae/phytoplankton tend to sink to the bottom of the ocean and become a long-term carbon store when they die anyway. That's how much of the oil and gas we're burning today was formed in the first place. No need for elaborate training of whales :)
Create an Africa-sized algae bloom with iron and urea fertilization, in the middle of the waste-plastic zone in the north Pacific gyre.
Krill eat the algae. Baleen whales eat the krill and the plastic. Then we train/drug the older whales, so they swim far away from the continental shelf, dive deep, and commit suicide on the bottom. We solve two problems with one stroke. (Then the gorillas just freeze to death when winter comes.) ~
I think the only workable schemes for active carbon sequestration involve artificially weathering calcium and magnesium containing oxide rocks to expose more surface area, and turn them into carbonates. That has to be done on a scale that far exceeds the entire global demand for concrete. Like building a 1:1 scale replica of the white cliffs of Dover, every year, for no economically exploitable reason. Grind up olivines, pyroxenes, calcium-rich plagioclases, periclases, perovskites, spinels, etc. into sand, eventually get chalk.