Friday, July 16, 2010
Bad Humans! Even Our Pre-Industrial Ancestors Caused Global Warming � Secondhand Smoke | A First Things Blog
Bad Humans! Even Our Pre-Industrial Ancestors Caused Global Warming � Secondhand Smoke | A First Things Blog: "Apparently, even pre-industrial humans were environmental villains. A new study blames our ancestors for starting global warming by wiping out the mammoths."
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