Yet Planktos is a constant target for groups who don't buy into the idea of carbon offsets.

CNN: Topical waters

George has had to put up with protesters continually claiming that the technology that Planktos is trialing isn't regulated.

CNN: Topical waters

"This really might be an incredible solution, " Planktos CEO Russ George told CNN.

CNN: Topical waters

The pilot study has been organized by Planktos, a Californian-based eco-restoration company.

CNN: Topical waters

The Sea Shepherd Conservation Society, a vocal critic of Planktos, has, according to George, threatened to 'intercept' the Weatherbird II if attempts are made to carry out research.

CNN: Topical waters

Planktos had announced that it would dump tons of iron dust in the ocean to spark the growth of phytoplankton, and then sell credits based on how much carbon the phytoplankton consumed.

NEWYORKER: Neptune��s Navy