1. Joachim Kuettner with sailplane

    Seven decades of science

    When you've been studying the ways of the atmosphere since the 1930s, you have many tales to tell. Joachim Kuettner has been sharing his life stories, including some lesser-known ones, in a new round of oral and video histories.

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  2. Progress in predicting El Niño

    • Climate

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  3. India's diminishing groundwater

    The stretch of the subcontinent that runs from eastern Pakistan across northern India into Bangladesh is likely the world's most intensively irrigated region. A new NCAR study shows that between 2002 and 2008, the region depleted groundwater at a rate of around 13 cubic miles per year.

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  4. Color graph of Arctic temperatures over the last 2,000 years

    Arctic Warming Overtakes 2,000 Years of Natural Cooling

    Arctic temperatures in the 1990s reached their warmest level of any decade in at least 2,000 years, new research indicates.

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