For all the talk about scandals in Washington, the news that caught my eye was the differing treatment accorded the latest benchmark in the global warming debate. Atmospheric carbon dioxide reached 400 parts per million earlier this month, as measured by two monitors installed in Mauna Loa, Hawaii, in the middle of the Pacific Ocean.
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Mark 400, mark 3000: What’s the difference?
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For all the talk about scandals in Washington, the news that caught my eye was the differing treatment accorded the latest benchmark in the global warming debate. Atmospheric carbon dioxide reached 400 parts per million earlier this month, as measured by two monitors installed in Mauna Loa, Hawaii, in the middle of the Pacific Ocean.