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  1. Better Mosquito: Transgenic versions spread less malaria

    Genetic engineers for the first time have made a mosquito that's wonderfully bad at transmitting malaria.

    By Susan Milius
  2. Materials Science

    Beyond Jell-O: New ideas gel in the lab

    Researchers have created a new class of hydrogels that might prove useful in tissue engineering, drug delivery, and other biomedical applications.

    By Jessica Gorman
  3. Health & Medicine

    Surgical Option: Removal of ovaries can prevent cancers in women at risk

    In women who harbor mutations in one of the BRCA genes, ovary removal reduces the risk of developing ovarian, peritoneal, and breast cancers.

    By Nathan Seppa
  4. Health & Medicine

    High elevation linked to hormone dearth

    Elderly Peruvian women living at very high altitudes have lower blood concentrations of some key hormones than do their lowland counterparts.