Uncategorized

  1. Health & Medicine

    Blindness Hazard: Gene variant tied to macular degeneration

    People who make a particular form of an immune system protein have a heightened risk of developing old-age blindness.

    By Nathan Seppa
  2. Health & Medicine

    Injections cut need for HIV drugs

    An experimental vaccine, when given to people infected with HIV, appears to reduce their dependence on antiviral drugs.

    By Ben Harder
  3. Humans

    Death can outdo ABCs of prevention

    Abstinence and monogamy may deserve little, if any, credit for the recent drop in the proportion of Ugandans who are infected with HIV.

    By Ben Harder
  4. Humans

    Letters from the March 12, 2005, issue of Science News

    Cheaters like us? The model for the emergence of a population of “cheaters” out of a population of “cooperators” described in “When Laziness Pays: Math explains how cooperation and cheating evolve” (SN: 1/15/05, p.