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  1. Man walking on snowy city street

    300 Billion weather forecasts used by Americans annually, survey Finds

    Close to 9 out of 10 adult Americans obtain weather forecasts regularly, and they do so more than three times each day on average, according to a new nationwide survey.

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  2. Color visualization of a sunspot's umbra and penumbra

    Sunspots revealed in striking detail by supercomputers

    In a breakthrough that will help scientists unlock mysteries of the Sun and its impacts on Earth, an international team of scientists led by NCAR has created the first-ever comprehensive computer model of sunspots.

    • Sun + Space Weather,
    • Supercomputing

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  3. The Toba mega-eruption, global cooling, and human evolution

    NCAR researchers are studying whether the eruption of Indonesia’s Mt. Toba supervolcano about 70,000–75,000 years ago may have cooled Earth enough to initiate an ice age and potentially alter the course of human evolution.

    • Climate

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