In the paper, Columbia University geoscientist Wally Broecker calculated how much carbon dioxide would accumulate in the atmosphere in the coming 35 years, and how temperatures consequently would rise. His numbers have proven almost dead-on correct. Meanwhile, other powerful evidence poured in over those decades, showing the "greenhouse effect" is real and is happening. And yet resistance to the idea among many in the U.S. appears to have hardened.
What's going on?
"The desire to disbelieve deepens as the scale of the threat grows," concludes economist-ethicist Clive Hamilton.
Global Warming/Deniers
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