Earth’s gravest challenge: Not enough food to go round

New Zealand Herald: As negotiators sat down this week for another hard round of bargaining at the climate change summit in Cancun, Mexico, new warnings emerged of potential catastrophe ahead. Researchers reported in Science magazine that almost every part of the world's oceans have been damaged by human activity, magnified by a significant rise in water temperatures and predicted more would come. Another study, by the ARC Centre of Excellence for Coral Reef Studies, warned of a potential mass extinction as the number......

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