wet1, The issues concerning declining resources and our future woes has been on my mind lately. The industry for which I work produces an incredible quantity of waste--possibly, I fear for my karma. Over the years, I have seen the indicators which define the trend. When I was kid, a Coke was offered in glass bottles, but now the packaging is either very thin plastic or aluminum. That's a trivial example, yes, but still just one of the signs which show the direction that we are traveling. I want to give this one some more thought and maybe return with a new thread. Talk to you later.