I haven't digested the study yet, but you might be interested in doing so...see here. The study was published in Nature here.
Here a radio report on the story from BBC4's Farming Today show online. The story begins at 8:00 into the program.
Dr. Michael Antoniou, the study's lead researcher, comments.
U.S. and EU surveys show that urine levels in humans reflect daily intake levels that are much higher than the rats in the study.
In addition, the show interviews a Monsanto UK spokesperson, Mark Buckingham, who says if glyphosate is found to be dangerous to human health, it will withdraw it from the marketplace.