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  1. Tech

    Corralling Brownian motion

    A new microscope system uses electrically controlled fluid motions to counteract Brownian motion, preventing those random jitters from driving proteins, viruses, and other tiny objects out of the field of view.

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  2. Physics

    Tiny wires trigger electric reversal

    Ultrathin zinc nanowires exhibit a puzzling conductivity reversal that flies in the face of known wire behavior.

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  3. Earth

    Shafts of snow sculpted by sun

    Physicists have created miniature, laboratory versions of towering snow spikes found high in the Andes Mountains.

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  4. 19662

    This article doesn’t say that penitentes appear only in the Andes, nor does it say in what part of the Andes they appear.