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An intergovernmental scientific committee of the London Convention on ocean dumping agreed at its closing plenary in Spain, to a tough consensus “statement of concern” warning that iron fertilization of ocean surfaces – as an attempt at commercial carbon sequestration – has environmental risks and lacks scientific evidence of effectiveness. The statement was triggered by news that Planktos, Inc. a for-profit enterprise with offices in San Francisco, Budapest, and Vancouver is about to dump 100 tons of iron nanoparticles over a 10,000 km² stretch of Pacific Ocean in the vicinity of the Galapagos Islands. The company’s goal is to sell carbon offsets on the unproven assumption that the phytoplankton bloom created by the iron dumping could lead to the permanent sequestration of CO2 greenhouse gases. “Its a very strong statement – literally an emergency call for the full London Convention [of the International Maritime Organization] to take up the threat of ocean geoengineering when governments convene in London this November 5-9,” says Jim Thomas of ETC Group, en route to Europe. “By publicizing the scientific body’s concern now, governments are bluntly warning companies that there could be national and international regulatory repercussions from commercial iron dumping.” Planktos has already been advised by the U.S. Environmental Protection Agency that commercial iron dumping by a U.S. flagged ship could be in violation of EPA rules. In response, the company has told US officials that it will either find another flag or another ship. Although the company has said that it intends to dump 100 tons of iron particles in a stretch of ocean somewhere near the Galapagos Islands this month, the whereabouts of its vessel, the Weatherbird II, is not clear and ETC Group believes the boat to still be docked at Fort Lauderdale, Florida.