The "ocean fertilization" referred to here is not with nutrients, but with iron [0]. Apparently there are glacial runoffs at Greenland which would just need to

The "ocean fertilization" referred to here is not with nutrients, but with iron [0]. Apparently there are glacial runoffs at Greenland which would just need to be transported to other areas of the ocean in order to capture massive amounts of CO2. [0]: https://en.wikipedia.org/wiki/Iron_fertilization https://en.wikipedia.org/wiki/Iron_fertilization