This article is from the In-Depth Report Earth 3.0: Solutions for Sustainable Progress

Global Warming: Beyond the Tipping Point

The world's most outspoken climatologist argues that today's carbon dioxide levels are already dangerously too high. What can we do if he is right?

Note: This article was originally printed with the title, "Beyond the Tipping Point".

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This article was originally published with the title "Beyond the Tipping point."

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