via

"But despite these shrill denials, the truth is that there is no more of a debate on the safety of GE crops than on reality of climate change, the scientific consensus on which all these same green groups aggressively defend. And the irony goes deeper: many of the strategies now being employed to demonize GMOs come straight out of the climate denialist playbook. There's the same promotion of false 'no consensus' statements by groups of self-appointed experts. Why, more than 300 "scientists and legal experts" signed a 'no consensus on GMO safety' statement last year, Greenpeace reminds us. That sounds like a lot, until you compare it with the 30,000 "American scientists" who have supposedly signed a petition claiming that there is "no convincing scientific evidence" linking CO2 with climate change, which Greenpeace (rightly in my view) ignores."

http://allianceforscience.cornell.edu/blog/mark-lynas/gmo-safety-debate-over