gandracu writes: It appears that a variety of Genetically Engineered maze produced by Monsanto is toxic for the liver and kidneys. What's worse, Monsanto knew about it, but tried to conceal the facts in its own publications. Greenpeace had to fight in court to obtain the incriminatory data and had it analyzed by a team of experts. MON863, the variety of GE maze in question, has been authorised for markets in Australia, Canada, China, Japan, Mexico, the Phillipines, and USA, besides the EU. Here is a link[PDF] to Greenpeace's brief on the study, and here is their account[PDF] of how the story was unearthed.