One big benefit: lots of fish feeding on the plankton. Unfortunately, lack of any ability to “own” the seeded part of the ocean would mean that others would harvest what you plant.
If iron locks up CO2 and CO2 is unrelated to warming, no harm done.
If iron locks up CO2 and CO2 causes warming, and we are actually warming as a result of CO2, then good deal.
If iron locks up CO2 and CO2 causes warming, but we are actually on a long-term cooling trend at the end of an inter-glacial period, then Holy Snowblower, Batman, it’s gonna get freaking COLD on this planet!
This is a horrible idea. Who wants to bet that if this actually happens that it will cause some kind of major environmental problem that was unintended?
Now, they get front page in all the newspapers and are taken seriously by a large segment of our population
Sometimes I really miss the more saner era that of the past
I liked the conversation about this here (see comments)
They’re going to keep screwing around until something really bad happens, imho.