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Your search has returned 58 articles:
  • Science Past from the issue of August 26, 1961

    EARTH ONCE GLOWED — The earth’s surface in its early years of life may have glowed like a beautiful rainbow, shimmering with the colorful array of light emitted by primitive organisms. Light emission may have occurred soon after life appeared on earth, when the atmosphere lacked oxygen…. As small amounts of oxygen appeared in the atmosphere, not all of the organisms could tolerate the...

    08/12/2011 - 10:17
  • Science Future

    Science Future for August 27, 2011

    September 6 In New York City, author Joshua Foer discusses the history and science of competitive memorization. See

    September 15 Deadline to submit photos illustrating “chemistry in our microbes” to the Colors of Chemistry calendar contest. For info go to

    08/12/2011 - 10:17
  • SN Online

    SN Online

    SCIENCE & THE PUBLIC BLOG Smoke-exposed kids are more likely to have neuro-behavioral disorders. See "Young minds at risk from secondhand smoke."

    BODY & BRAIN At-risk newborns may avoid death and disability by cooling off. See "News in Brief: Body & Brain."

    Active neurons trigger changes that speed up signaling. Read "How exercise benefits nerve cells."


    08/12/2011 - 10:16
  • Feature

    When Birds Go to Town

    Anne Clark and Kevin McGowan are discussing, perfectly seriously, how a crow might be able to recognize a car. Not tell a car from, say, a cat, but pick out the red Subaru from other cars in the parking lot.

    Clark, an animal behaviorist at Binghamton University in New York, is sitting in her own red Subaru with McGowan, of...

    08/12/2011 - 10:14
  • Feature

    The Color of Controversy

    When it comes to the safety of dyeing food, the one true shade is gray.

    Artificial colorings have been around for decades, and for just about as long, people have questioned whether tinted food is a good idea. In the 1800s, when merchants colored their products with outright poisons, critics had a pretty good case. Today’s safety...

    08/12/2011 - 10:13