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Originally Posted by Happy Monkey
Global warming is happening. The only debate is over the extent of the effect humans have over it.
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Tim Barnett of the Scripps Institution of Oceanography even puts that question to bed. Mankind - hands down without a doubt - is the source of the unprecedented near vertical spike in the global warming curves. There is no doubt that humans are the one, only, major source of global warming. The only questions remaining are what parts of human activity are the most destructive.
For example, many previous research studies - from temperature change during the three days of no airplanes after 11 September to measurements of light on the moon during total lunar eclipses - suggest that the world would be significantly warmer if we had not filled the air with so much dirt.
No, there is no doubt that mankind is a slam dunk reason for the sharpest rise in global temperatures. The only remaining question is which activities are doing the most damage.