News

  1. Earth

    Can polluted air cause birth defects?

    For the second time, scientists have found evidence suggesting that prenatal exposure to air pollution may cause certain birth defects.

    By Ben Harder

  2. People with malaria attract more mosquitoes

    The protozoan causing malaria may facilitate its own spread by making people more alluring to mosquitoes.

    By Christen Brownlee

  3. Placebo reins in pain in brain

    Pain relief provided by inert medications may reflect increased transmission of a brain chemical involved in regulating stress and suppressing pain.

    By Bruce Bower
  4. Astronomy

    Hidden black holes

    A new study has added to existing evidence that most of the monster black holes at the cores of galaxies are shrouded by dust.