And I could dig up as many examples of things we thought were unhealthy that weren't, and even more things we were right about the first time. None of it would prove anything about GMOs or air pollution. If you're worried about them, then great, stick to organic foods. They're not going anywhere. But until someone has hard evidence that the mountains of research supporting GMOs are flawed, banning or restricting them is paranoid and irresponsible.