Arctic sea ice melting past an irrevocable tipping point – Bill McKibben
“Arctic sea ice melting past an irrevocable tipping point…” - Excerpt from Bill McKibben.  Â
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National Geographic Voices – Bill McKibben           Â
The Voices section of the August 2006 edition of National Geographic Magazine features an essay by Bill McKibben titled, “A Deeper Shade of Greenâ€. In it McKibben powerfully argues that American Environmentalism so far has â€flunked†when it comes to adequately dealing with global warming. He says, “Environmentalism’s method of handling global warming is flawed… we might need a new idea.â€