News

  1. Astronomy

    Lights out

    Astronomers who have conducted a detailed analysis of the colors of some 37,000 nearby galaxies conclude that the universe is gradually growing darker.

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  2. Chemistry

    Amino acid lends a heavy hand

    Scientists have identified a mechanism to explain how amino acids evolved to become exclusively left-handed in all living organisms.

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  3. Tech

    Smart dust can swarm target

    Microscopic mirrors can swarm a target and produce an optical signal that identifies the target to the observer.

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  4. Flag raised for kids’ mental health

    A study of North Carolina children and teenagers finds that at least 1 in 3 developed one or more psychiatric disorders by age 16.