1. Satellite image of eruption of Hunga Tonga-Hunga Ha’apai volcano.

    Volcanic eruption dramatically increased water vapor in the stratosphere

    Radiosonde data reveal the extent to which the eruption of a submarine volcano substantially raised water vapor levels in the stratosphere.

    • Climate

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  2. Speaker Pelosi visits NCAR

    Scientists brief Pelosi and Neguse on research advances

    Pelosi calls visit "transformative" and lauds research efforts.

    • Climate,
    • Government Relations

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  3. Wildfire in Colorado mountains.

    Wildfire experts provide guidance for new research directions

    Fire experts across the nation call for a more strategic and interdisciplinary approach to pursuing wildfire research and protecting vulnerable communities.

    • Air Quality,
    • Climate,
    • Weather

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  4. Flooding along South Yuba River in California in 2017.

    California faces heightened risk of megafloods

    Climate change is sharply increasing the risk of a catastrophic megaflood in California that could submerge large swaths of the state and displace millions of residents.

    • Climate

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  5. Nuclear war would cause global famine

    Nuclear war would have profound effects on global food production, resulting in devastating famine.

    • Climate

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