| Temperature change is a normal occurrence on the | | | | temperatures started to cool. This leads me to |
| changing earth that we live on. If we look back over | | | | believe that the high Carbon Dioxide levels may have |
| the past 400,000 years, we see that the average | | | | brought on the warm periods. As the Carbon Dioxide |
| temperature as determined by Antarctic ice-core | | | | levels fell the temperature also fell. |
| records, show an 8-deg C change. The earth is | | | | If we look at the last 1,100 years, we see only about |
| normally about -4 to -5 deg C below the current | | | | a one deg C change with the current temperature |
| temperature. This was during the four ice ages that | | | | about equal to what it was about 1,000 years ago. |
| occurred during this period. | | | | During the last few years the temperatures have |
| The warm periods between the ice ages are relative | | | | leveled off and may be cooling back down again. |
| short compared to the length of the ice ages which | | | | With so many factors affecting our global |
| last about 100,000 years. Our current warm period | | | | temperatures, I would expect more drastic changes |
| has lasted longer than normal, about 6,000 years. | | | | in the future and if history repeats itself, we could be |
| About the same length of time that we have a | | | | in for another ice age. If in fact anything man is |
| recorded record of man on earth. | | | | currently doing is affecting the temperature by |
| Carbon Dioxide levels have in the past followed along | | | | keeping the earth warmer, it would be a positive |
| with the major changes in temperature. However in | | | | thing. |
| the past 200 years, this level has jumped and may | | | | See: ( for more information. |
| have even prevented a return to another ice age. | | | | In my life time I have seen large orange groves once |
| The previous warm period was warmer that our | | | | common in north central Florida wiped out by colder |
| current warm period and lasted almost as long as our | | | | weather and the land owners giving up and moved |
| current warm period followed by a 100,000 year ice | | | | to more southern areas. I know that the reverse |
| age. This may have been the time of the heavy | | | | may have been true in other parts of the country |
| forest growth and many fires, as the Carbon Dioxide | | | | and is only evidence that change is normal. There is |
| levels also remained high. The Carbon Dioxide levels | | | | an old saying, If you don't like the weather, just wait, |
| peaked at the same time that the warming levels | | | | it will change. |
| peaked, but lasted much longer after the | | | | |