News

  1. Humans

    Burdens of knowledge

    Greater understanding of the role of genetics in human diseases presents scientists with ethical dilemmas.

    By Patrick Barry
  2. Health & Medicine

    Salmonella seeks sweets

    A sugarlike substance in the roots of lettuce may attract food-poisoning bacteria.

    By Janet Raloff
  3. Earth

    Groundwater use adds CO2 to the air

    Pumping out groundwater for crop irrigation or industrial purposes releases planet-warming carbon dioxide into the atmosphere.

    By Sid Perkins
  4. Health & Medicine

    Earache microbe shows resistance

    A strain of bacterium that causes middle ear infection is resistant to all antibiotics currently approved for the ailment.

    By Nathan Seppa
  5. Tech

    Hooking up

    Cleverly designed molecules can self-assemble into networks and stay robustly connected.