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Your search has returned 34 articles:
  • News

    Fertility and Pollution: Dirty air, ozone linked to sperm troubles

    Men might improve their fertility by reducing how much pollution they breathe in. The dirtier the air, the lower a man's sperm count and the more sperm with fragmented DNA he produces, two new studies suggest.

    However, neither report directly links the decline in sperm quality to fertility problems.

    "The decrease is not enormous," comments environmental chemist Brian McCarry of...

    10/05/2005 - 11:59 Earth & Environment
  • News

    Untangling a Web: The Internet gets a new look

    The Internet may be everywhere and nowhere, but that's not stopping information engineers from mapping it. An atlas that accurately shows the physical path of information from one computer to another could protect the Internet from massive failures after, say, an earthquake or a terrorist attack. The latest finding by Internet cartographers offers some good news: Routing computers—the...

    10/05/2005 - 11:38 Computing
  • News

    Nobel prizes: The power of original thinking

    Physiology or Medicine

    Two Australian scientists who showed that bacteria can cause stomach ulcers have won the 2005 Nobel Prize for Physiology or Medicine.

    The researchers made their discovery 23 years ago, at a time when ulcers were thought to result mainly from excess stomach acid brought on by stress and spicy food. In 1979, J. Robin Warren, a pathologist at the Royal...

    10/05/2005 - 10:52 Humans & Society
  • News

    Saturnian sponge

    The first close-up portrait of Saturn's icy, tumbling moon Hyperion reveals a spongy-looking surface unlike that of any other known moon. Recorded by the Cassini spacecraft, the spongelike appearance might be the result of closely packed craters that have retained their clean shape, says Cassini researcher Peter Thomas of Cornell University. The debris from impacts that excavated the craters...

    10/05/2005 - 10:15 Planetary Science
  • News

    Heart of the Matter: Scanning scope digs deeper into microchips

    Princesses may feel peas under huge stacks of mattresses, but semiconductor manufacturers have a much harder time detecting minuscule defects within the crystalline layers of their microchips. So, they have difficulty determining when something goes wrong in the manufacturing process. Now, researchers have developed a noninvasive imaging technique that lets them see deep inside a chip.

    10/05/2005 - 10:02 Materials