I say we should UNILATERALLY fertilize (lightly to prevent overgrowth of algae) the areas of the Southern Ocean that currently produce little biomass. Huge amounts of CO2 would be removed from the atmosphere while providing billions of pounds of seafood for the world’s poorest nations. In most of that ocean, the only nutrient missing is iron, so we’re talking trace amounts. Oh yeah, then we sell carbon credits to anyone dumb enough to buy them.
Hmmm...it's being proposed that we seed the seaborne, I think, Antarctic ice with iron to melt it because that will counteract global warming because...something.