I agree we should also plant trees and cultivate forests however that won't help fix our oceans. The reason why I like the olivine weathering proposal is that

I agree we should also plant trees and cultivate forests however that won't help fix our oceans. The reason why I like the olivine weathering proposal is that it weathers co2 out of the ocean and uses the ocean as a carbon sink. This way you remove co2 from the both the atmosphere and ocean (if you weather enough of it).