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Your search has returned 18 articles:
  • News

    Good taste in men linked to colon risks

    From Denver, at a meeting of the American Association for the Advancement of Science

    Men with exceptionally good taste may pay for it in health risks.

    About 25 percent of people have extra taste buds on their tongues. They live in "a neon taste world" instead of a "pastel" one, as Yale University researcher Linda Bartoshuk puts it (SN: 7/12/97, p. 24:

    02/25/2003 - 13:29
  • News

    HIV in breast milk can be drug resistant

    From Boston, at a conference on Retroviruses and Opportunistic Infections

    A drug called nevirapine, sold as Viramune, can reduce the risk of mother-to-newborn transmission of HIV when taken by a woman at the onset of labor. Scientists now report that after taking nevirapine, the women often harbor a form of HIV with genetic mutations that make it resistant to the drug. Moreover, the...

    02/25/2003 - 12:43 Biomedicine
  • News

    Designer RNA stalls hepatitis in mice

    From Boston, at a conference on Retroviruses and Opportunistic Infections

    Using strips of synthetic RNA that interfere with normal gene action, scientists working with mice have stopped the progression of hepatitis, a lethal inflammation of the liver often caused by a virus. The study is the first to show that this technique, called RNA interference, can improve the health of a mammal...

    02/25/2003 - 12:28 Biomedicine
  • News

    Dolly, first cloned mammal, is dead

    Dolly, the most famous sheep since Mary's little lamb, was euthanized on Feb. 14 to prevent further suffering after she acquired a severe lung infection. The sheep, which was 6 years old, was the first mammal to be cloned from the DNA of an adult, and its birth set the stage for the current furor over human cloning (SN: 4/5/97, p. 214:; 10/...

    02/25/2003 - 11:55
  • News

    Ceramic rebounds from stressful situations

    Say the word ceramic and many people think of teacups or plates that shatter when dropped. Although scientists value high-quality ceramics, such as those used to shield spacecraft from heat, for their combination of heat resistance, stiffness, and lightness, even these ceramics are brittle and difficult to cut or drill without breaking.

    Recent experiments reveal that an...

    02/25/2003 - 11:32 Materials
  • News

    A safer antioxidant?

    Numerous diseases and complications associated with aging trace to damage from so-called free radicals that form naturally in the body and are chemically reactive. Many people attempt to cope by self-medicating with natural antioxidants, including vitamins C, E, and the polyphenols found in plant-derived foods and drinks. There's a problem with that: Taken in excess, most antioxidants start...

    02/25/2003 - 11:24 Chemistry
  • News

    Worms may spin silk fit for skin

    Silk cocoons could become puffs of valuable human proteins if a new bioengineering method developed by Japanese scientists pans out.

    In the past few decades, various biotechnology research teams have devised ways to mass-produce medically or industrially useful proteins by modifying the DNA of organisms. The animals create the proteins in their cells, milk, urine, or eggs (...

    02/25/2003 - 10:42 Technology
  • Feature

    Mature Before Their Time

    This winter has been one of the hottest on record for cosmologists. A flurry of new reports suggests that a surprising number of galaxies grew up in a hurry, appearing old and massive even when the universe was still very young. If this portrait of precocious galaxies is confirmed by larger studies, astronomers may have to revise the accepted view of galaxy formation. The provocative reports...

    02/25/2003 - 09:29 Astronomy