Read about the global warming and climate crisis debate, with information about warming's causes and its effects on life on Earth. Wikipedia's user-written overview ...

While some would call global warming a theory, others would call it a proven set of facts. Opinions differ vehemently. Let us consider global warming ...

Project of the Competitive Enterprise Institute, GlobalWarming.org examines global warming's economic, scientific, and risk analysis issues from a market-oriented ...

Global warming is the increase in the average temperature of Earth's near- surface air and oceans since the mid-20th century and its projected continuation . ...

The EPA Climate Change site provides comprehensive information on the issue of climate change and global warming in a way that is accessible and meaningful ...

The average surface temperature of earth has increased more than 1 degree Fahrenheit since 1900 and the rate of warming has been nearly three times the ...