Following revelations that StarLink corn, which caused so much embarrassment for Kraft a few weeks ago, is present in the US's third largest retailer's own-brand taco shells, Safeway has embarked on a massive voluntary recall. The prompt response to the charges, brought by an antibiotechnology coalition, is stark evidence of the importance of the GM issue; investigative tests to confirm the presence of the genetically modified corn, which has not yet been approved for human consumption, have not even been carried out yet. If further testing by the US Food and Drug Administration (FDA) confirms the charges, only then would Safeway be legally obliged to remove the shell from the shelves."We're doing this out of an abundance of caution," said store spokeswoman, Debra Lambert.The