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The Royal Society of Canada, the country’s premier scientific body, has
called for all crops produced by genetic modification to undergo rigorous safety
testing. In a report commissioned by the Canadian government, but highly
critical of its approach to regulating GM foods, the society says that the
principle of “substantial equivalence”—the assumption that GM foods are
substantially the same as other foods—is scientifically unsound. Britain
and the US also apply this principle. Canada is the world’s third-largest
producer of GM crops.