Past Changing Climate Shouldn't Be Cause For Comfort, It Should Cause Concern (Video)
In this final in a series of six videos TreeHugger has done in collaboration with the good folks (and sometimes guest writers here) over at Skeptical Science, John Cook explains how logical fallacies are employed by climate deniers--such as claiming that since climate has changed many times in the past, before humans, we couldn't be causing it now. More on Global Climate Change
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