Brisbane Times: A Sydney University proposal to produce a plankton bloom in the Tasman Sea, as part of a trial to combat global warming, has drawn criticism from environmental groups. Under the proposal, nitrate fertiliser would be sprinkled over a 1,600 square kilometre area of the sea to stimulate the bloom that researchers hope will sequester carbon at the bottom of the ocean for up to a century. The UN’s International Panel for Climate Change has described such a method of carbon …