Harry writes: Peter, I think you are making a mistake when you say that we trust scientists. Just because they have the skill to detect minute traces of things is not to be confused with trust. Scientist are in a group of people with high expectations and are therefore prone to being biased or even corrupt. Since you address me personally, I will reply. I don't know who you refer to when you say "we". I trust the EPA and the FDA to do a decent job. Not perfect, mind you, but we are a lot better off with them than we would be without them. I have been to Mexico and South America so I have seen societies that lack basic regulations for protecting the safety of citizens against greedy companies. As for scientists having high expectations -- what are you saying here? That you have low expectations? Or that people with high expectations are biased? Whatever. They're just people. Scientists as a group are no better nor worse than any other group, in my opinion. People have various motives. The principle mandate of organizations like EPA and FDA is to protect, not promote chemicals. Last month I was accused of being a Luddite; this month I am a dupe of the EPA. Peter Borst