1. Andy Heymsfield

    The hole story

    They’ve been called “crop circles in the sky.” Across the world, sightings of oddly circular holes within cloud layers—dubbed hole-punch clouds by scientists—have triggered bemusement and speculation.

    • Weather

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  2. Hand holding key

    Open access 101

    New, more interactive and versatile uses of the Web are beginning to enable profound changes in the entire life cycle of scientific publications. Among these developments, one that is currently looming large in many scientists’ minds is open access.

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