Feature

  1. Health & Medicine

    Dangerous History

    The genome of the TB bacterium has small but significant pockets of diversity, giving scientists new targets for preventing and treating the disease.

    By
  2. Physics

    Spinning into Control

    High-speed flywheels could replace batteries in hybrid vehicles and help make the electrical grid more reliable.

    By
  3. Our Microbes, Ourselves

    Trillions of microbes live in the human gut and skin, and they may be essential to health.

    By
  4. Animals

    Egg Shell Game

    Birds apparently cheat chance when it comes to laying eggs that contain sons or daughters.

    By
  5. Physics

    The Hunt for Antihelium

    Scientists have been searching about 30 years for a single nucleus of helium made from antimatter, and although the discovery would imply that whole antimatter galaxies exist, the researchers' time could be running out.