Global warming has become a big-ticket item in the eyes of its supporters. At stake are research funds, jobs and the ability to control lives all over the globe. Most climatologists agree that over the last century, the Earth's average temperature has risen about one degree Celsius.

The controversy centers around the source of the temperature change — manmade or natural causes. Global warming alarmists hold the view that it's manmade emissions of CO2 that's driving climate change ...

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