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Science commentator Laurie Winkless looks at how Korean researchers have taken waste from an abundant species of clams to recreate the silk produced from another, endangered species of clam. A study out of Canada has found that construction produces the equivalent of 1 - 3 metric tons of carbon per person each year - and it needs to drop by 10 % to stay on top of emission reduction targets - so how can it be done? And a fishing ban on the Yangzte River appears to be working, with fish biomass increasing |