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  • Feature

    Comeback Bird

    During the last week of April, an e-mail zinging through the bird-watcher community spilled the beans on one of the biggest and best-kept secrets in ornithology. It proclaimed that North America's famed ivory-billed woodpecker was not extinct after all, but Terry Rich of the U.S. Fish and Wildlife Service wasn't excited. He had heard that story too many times before. Since the last widely...

    06/06/2005 - 09:54 Animals
  • Feature

    Infrasonic Symphony

    "Let me start off with a riddle," says NASA scientist Allan J. Zuckerwar. In his office in Hampton, Va., he rattles off items as dissimilar as rhinoceroses, supersonic aircraft, and hurricanes. "Now, what do they have in common?" The answer, Zuckerwar explains, is that each one generates silent infrasound—long sound waves at a frequency below 20 hertz. People can't hear anything below that...

    01/03/2004 - 14:55 Earth
  • Food for Thought

    Calling All Cows

    Last May, tissues from the carcass of a North American cow turned up positive for bovine spongiform encephalopathy–the ailment responsible for mad cow disease. Within hours, the Canadian government traced the animal to the Alberta farm where it had been raised for its 8 years of life. In short order, other members of its herd were quarantined.

    What made this...

    10/01/2003 - 16:55 Agriculture
  • Feature

    Digital Cells

    Imagine a future in which a single drop of water holds a veritable army of living robots; in which people download software updates not for their computers, but for their bacteria; and in which specially programmed cells course through a person's arteries, monitoring blood sugar concentrations and keeping an eye out for cholesterol buildups.

    These...

    04/21/2003 - 10:56 Technology
  • Feature

    Electronic Jetsam

    Twice each day at more than 1,100 sites around the world, scientists simultaneously loft weather balloons to collect data about Earth's atmosphere. During each balloon's ascent, which lasts a couple of hours or so, instruments garner information about air temperature, humidity, barometric pressure, wind speed, and wind direction. Meteorologists feed all of these data into their computer...

    01/27/2003 - 13:58 Earth
  • Feature

    Guessing Secrets

    Even on uneventful days, traffic on the Internet can sometimes stutter to a crawl. It gets much worse when millions of people go online at the same time to view the latest images from a Mars expedition, download a trailer for an upcoming Star Wars movie, or take in a titillating fashion show. The mushrooming demand on such days can rapidly clog this worldwide web of computer networks, causing...

    04/01/2002 - 13:07 Numbers
  • News

    New device opens next chapter on E-paper

    Imagine folding up today's newspaper only to unroll it tomorrow and find

    tomorrow's news. Now, researchers have made a plastic electronic material that

    could make such fantasies come true.

    With the debut of electronic ink a few years ago, researchers took a step toward

    meshing the data-handling power of electronics with the flexibility and

    convenience of...

    04/25/2001 - 19:59 Technology
  • Feature

    Editor's Letter

    11/27/1999 - 00:00
  • Feature

    Astronomy

    09/18/1999 - 00:00
  • Feature

    Science News of the Year

    12/21/1996 - 00:00