Alas, it may not be so simple. Many researchers are questioning the efficacy of the method for drawing down carbon and say it could exacerbate ocean acidification. Meanwhile, the EPA is warning that seeding without a permit may be illegal. Undeterred, Planktos says it will fly a flag of convenience if the EPA attempts to intervene with what it calls its "Voyage of Recovery."
The controversy points to one of the more glaring problems with the idea of geo-engineering solutions to climate change: When it comes to tweaking planetary systems, who decides the what, when, where and how?