1. Climate change, IPCC & aerosols - Early morning smokestacks

    Words about warming that matter

    Two leading climate-change researchers cast new light on one of the most prominent findings of the last major IPCC report, issued in 2007.

    • Climate

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  2. gravity waves

    Triggering turbulence in clear air

    New research points to gravity waves, which ripple unseen through the atmosphere, as the culprit in many cases of clear-air turbulence. If those waves can be forecast, the research suggests that planes in many cases could be rerouted around them.

    • Weather

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  3. Alaska cold - headlights on a highway in Fairbanks, AK

    Yes, Virginia, it was cold somewhere

    Even as the rest of the nation baked in 2012, Alaska froze. The contiguous 48 U.S. states saw their warmest year on record by far, but it was one of Alaska's chilliest.

    • Climate

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  4. Hurricane Sandy storm surge-wreckage of New Jersey roller coaster

    Phenomenon of the year: Sandy’s stunning surge

    More than two days ahead of landfall, it was clear that Hurricane Sandy could bring higher water than New York and New Jersey had seen in decades. But for thousands of people in the area, the threat simply didn’t register. (Part 1 of 2)

    • Weather

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  5. Dissecting Sandy's storm surge-graphic shows top-10 high water events at Battery Park, NYC

    Dissecting Sandy’s surge

    Sandy's storm surge was more than twice that of other recent tropical cyclones in the New York City area—but several other factors teamed up to bring waters to their catastrophically high level. (Part 2 of 2)

    • Weather

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