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Global Warming The earth's average temperature stays fairly much the same from year to year. It gets very cold in the winter and very hot in the summer. Although some years may be a little hotter than normal, it may be a little cooler where others live. Consequently, when you look at the average temperature everywhere on the earth for a whole year, there is very little change. The current average global temperature is about 57 …

…greenhouse gases increases, but other factors complicate this. The most significant source of uncertainty is the effect that clouds will have on the system. The areas that will most likely be affected by temperature increases are the northern polar zone, where winter means temperatures could go up about 18 degrees. In addition, the continental interiors, where significant warming could occur. As we can see, global warming will be a factor at great in the near future.