News

  1. Health & Medicine

    Breathe easy

    When it comes to heart function, the concentration of pollution in the air may matter less than its chemical makeup.

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  2. Space

    Ice on Mars

    White stuff on Mars is water ice, Phoenix team confirms.

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  3. Physics

    Left in the cold

    An optical trap lets atoms in but not out, and it can be used to study matter at ultracold temperatures.

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  4. Chemistry

    Catching your breath

    Scientists are investigating how to use the human breath to diagnose diseases and environmental ills.

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  5. Humans

    Worth the cooties

    Boys who attend preschool classes with a majority of girls do better developmentally than other boys.