Most (all?) species impact the eviornment and adversely affect other species. True, humans do this larger scale than most (all?) other species. I suspect other forces (God?) are supplementing evolution. If not, 90% of present humans seem to be devolving and aiming at a major die off of humans tomorrow or next century. I doubt that the shrinking percentage of right thinking humans can offset the bad effects of the growing majority of wrong thinkers. I'm not sure I know wholesome thinking from destructive thinking. Worse, we are reluctant to tailor our actions to our opinions on what is best to sustain our planet and our civilization. Neil