1. NASA SDO satellite image: AIA 171 on 2011-07-26 at 22:45:01 UT

    Wave power can drive Sun’s intense heat

    Alfvén waves contain enough energy to heat the corona and drive the solar wind.

    • Sun + Space Weather

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  2. field of corn

    Corn and climate: a sweaty topic

    If you’re an American, it’s tough to avoid corn. This ubiquitous starch turns up in soft drinks, compostable cups, and automobile fuel—and even plays a role in U.S. heat waves, including the intense one of 2011.

    • Climate

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  3. Flights can inadvertently generate rain and snow near airports

    The inadvertent cloud-seeding effect occurs up to about 6 percent of the time at major airports.

    • Weather

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