For seven years [Professor Gilles-Eric Séralini, professor of molecular biology at Caen university in France] and his team have questioned the safety standards applied to varieties of GM maize and tried to re-analyse industry-funded studies presented to governments. Last week, Seralini brought the whole scientific and corporate establishment crashing down on his head. In a peer-reviewed US journal, Food and Chemical Toxicology, he reported the results of a €3.2m study. Fed a diet of Monsanto's Roundup-tolerant GM maize NK603 for two years, or exposed to Roundup over the same period, rats developed higher levels of cancers and died earlier than controls. But barely had the paper surfaced than it was attracting heavyweight academic criticism. Commentators variously claimed the study to be biased", "poorly performed", "bogus", "fraudulent", "sub-standard", "sloppy agenda-based science", "inadequate" and "unsatisfactory". Séralini and his scientists were labelled "crafty activists" and "anti-science". It was a triumph for the scientific and corporate establishment which has used similar tactics to crush other scientists like Arpad Pusztai of the Rowett Institute in Scotland, who was sacked after his research suggested GM potatoes damaged the stomach lining and immune system of rats, and David Quist and Ignacio Chapela, who studied the flow of genes from illegally planted GM maize to Mexican wild maize.