A German research ship laden with 20 tonnes of iron sulphate has whipped up a storm of protest as it sails towards the Antarctic, where it intends to dump its cargo into the ocean. Scientists on the Polarstern, which set sail from Cape Town in South Africa on 7 January, plan an ocean fertilization experiment that some argue will violate international law. But, the scientists say that it will yield the very data necessary to assess the impact of the controversial geo-engineering technique. (source: nature.com)
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