From: Sherry J. Bright
             Subject: Global warming
            
             (After a lot of reading and hunting around on the net, I found a great deal of information on this topic. I had never really researched on it before so wanted to make sure that calculations agreed from report to report. Most of them did so I will base my answer on these different reports. This subject is extremely interesting, scary and a bit of a shock as to how much we have abused and taken advantage of this Earth. Though progress as far as technology has been something we make use of and enjoy, we are paying for it in ways I never thought of before this subject came up in this class! Please forgive my ignorance. I am troubled that my children and their children will suffer because of our lack of concern, knowledge and greed. I read a short story the other day, about the people in a village having never heard the word cancer until they were run out of their homes and into the city area's. Years later, some of the people from this village are dying from disease. my point is that before they came to the cities, they had always died of old age ...)
            
             FIRST of all, it is important to know that the "greenhouse effect" is not a bad thing in itself. In fact, this planet would be a life-less waste land without its natural greenhouseing. There are a collection of gases called "greenhouse gases," which are water vapor, carbine dioxide, ozone, methane, nitrous oxide, and chlorofluorocarbons (CFC). Without the natural greenhouse effect, the surface temperature of our planet would be an average of -18°C (zero degrees F). The mixture of these gases have remained pretty much stable over the centuries and have kept us all living. But here we are in the late nineties, and we are not so stable anymore.
            
             Our activities and what we use to perform our activities is increasing year to year, many of them doubling and tripling. It's a case of the amount of gases that Earth produces naturall...