News

  1. Health & Medicine

    Comb over Chemicals: Tool may rid heads of pesticideproof lice

    Used systematically, special combs may be more effective than insecticidal shampoos at ridding a child's scalp of head lice.

    By Ben Harder
  2. Anthropology

    Reservoirs of Evolution: Rainy periods linked to human origins in Africa

    Three phases of heavy rainfall in eastern Africa between 2.7 million and 900,000 years ago created deep lakes and might have played a critical role in the evolution of human ancestors.

    By Bruce Bower
  3. Health & Medicine

    Outwitting TB: Enhanced vaccine protects mice in lab tests

    An enhanced vaccine appears to offer better protection against tuberculosis than the current version does, a study in mice suggests.