Hello folks, Chris Perley said in part: ...... But then, my criterion is ecological health, and some people have other criteria... Ray here: Some folks think that the criteria are ecological health *and* human health. I don't understand what is meant by "ecological health" or by "human health" when both are considered necessary - both conditions have to be met. Chris, what do you mean by "ecological health"? And is that acondition for ethical action? Ray %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%