Uncategorized

  1. Health & Medicine

    When Flu Flies the Coop

    Scientists are tracking the spread of a threatening influenza virus in birds and exploring strategies that could be used to halt a potential outbreak in people before it explodes into a global epidemic.

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  2. Astronomy

    Deep Impact

    Data from the Deep Impact mission reveal that the bullet that slammed into Comet Tempel 1 on July 4 excavated material that likely hadn't seen the light of day since the birth of the solar system 4.5 billion years ago.

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  3. Math

    Fermat’s Natural Spirals

    Using points to trace out spirals produces intriguing secondary patterns.

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  4. Earth

    Changing Earth

    Developed by the Smithsonian Institution’s National Museum of Natural History, this Web site focuses on Earth’s history.