Hi Chuck, Brain, Joe, Bev, ENet Listservers, Back in College, decades ago, I took a course on equation writing. I think it was called Dimensional Analysis. It was amazing how one could write equations based on common engineering/ science knowledge and then put things in the numerator or the demoninator to postulate a solution for an equation. If we look at Global Warming in simple terms for equation writing what would it show us? For such simple things as the number of humans, and the effect of human industrialized consumption would these factors go in the numerator or the demoninator. I hope you would agree that they should go in the numerator. On the demoninator side we could do things to effect a balance, what would they be?? I know Killing, or Culling is one of them, yet this has some bad ramifications. Tera our Earth is only limited in it's response and depends on human habitation/de-planation. I guess my point is that as long as we are in an expanding human population universe, with all that we and our fellow humans want, Global Warming has to be dealt with in the demoninator. Yours in Engineering, Dave YiEngr, MA/NY DDave