[JackFr]

> The science shows these chemicals to be tragically toxic

I doubt that the science can show a compound to be tragically toxic any more than it could show a compound to be hilariously toxic, frightenly toxic or delightfully toxic.

Apart from an observer, who is typically human (though sometimes in our mind an athropomorphized animal or superhuman deity) I'm not sure anything in nature can be tragic. It just is. No one mourns the trilobites.

[dylan604]

You say that, but it should be part of the creating of something new. It should be studied to see what negative effects it has. We have enough collective knowledge to know that even when things are created to do good, some negative things sometimes occur. It's not beyond reasonable to have the new thing tested in these negative reactions as well.