1. "Missing" heat may affect future climate change

    Current observational tools cannot account for roughly half of the heat that is believed to have built up on Earth in recent years.

    • Climate

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  2. Canadian smoke plume, 2008

    Air pollution: It all depends on your perspective

    There’s only so much air to go around. Since we inhale trillions of molecules with every breath, a few of them may have been exhaled by people who lived hundreds or thousands of years ago.

    • Air Quality

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  3. UCAR Magazine

    Wet, cool, and wild: The winter of 2009–2010

    The downpours of March suggest that the most noteworthy aspect of the Northeast’s winter was the intense precipitation rather than unusually cold air.

    • Climate

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