Global warming¡hmmm¡I wonder just how much global warming is caused from the population alone, that has doubled, almost tripled since I was a kid growing up. Of course, along with the increased population is the increased number of automobiles out there and the large expanse that cities have grown to. What with all that concrete and pavement. Just saying. OF course, I just finished watching the new Matrix movie and humans do tend to create a lot of heat on their own.