I know that, unlike Mr. Gage, we have the advantage of being here, so I don't want to preempt his answers, but for me, the answer is the European Union, hands down. When it's making a decision about whether or not to register, for example, a herbicide for use in agriculture, the European Union effectively asks, under their plant protection legislation, “Do you have the information that demonstrates this product's safety?” If the registrant says they don't have that study, or they don't have the information proving safety, the European Union's response is that the product will then not be registered there.
That's the definition of the precautionary approach: if you can't demonstrate that something is safe, you can't rely on scientific ambiguity. The EU does that very well.