News

  1. Physics

    One-Atom Laser: Trapped atom shoots steady light beam

    A single, ultracold cesium atom sandwiched between two mirrors yields the most orderly beam of laser light ever.

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  2. Unfair Trade: Monkeys demand equitable exchanges

    Researchers say they have shown for the first time that a nonhuman species—the brown capuchin monkey—has a sense of what's fair and what's not.

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  3. Estrogen Shock: Mollusk gene rewrites history of sex hormone

    Estrogen and similar hormones evolved much earlier than thought.

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  4. Tech

    Dream Machines from Beans: Legume proteins provide motion

    Plant proteins swell and shrink in response to calcium, sparking new ideas for micromachines.