Volcano blows hole in global warming fight[ Tue, 12 Oct 2010 15:27:05 GMT ]A volcanic plume of iron-laden ash from a 2008 Alaskan volcano eruption led to an unprecedentedly huge bloom of photosynthetic ocean plankton that fed off the ash, researchers have found. This natural phenomenon is much like a geoengineering scenario proposed by some researchers who want to fight global warming by spurring the growth of marine plants that can suck carbon dioxide from the air.