News

  1. Health & Medicine

    Conduit to the Brain: Particles enter the nervous system via the nose

    Tiny airborne particles can apparently infiltrate the brain by shimmying up the nerve that governs smell.

    By Ben Harder

  2. Sleeper Effects: Slumber may fortify memory, stir insight

    In two separate studies, researchers found that a specific sleep stage may amplify recent memories and that sleep can inspire problem-solving insights.

    By Bruce Bower

  3. Pushing Cancer over the Edge: Compounds trigger tumor-cell suicide

    Compounds that free cancer cells to commit suicide slow tumor growth.

    By John Travis
  4. Plants

    Dawn of the Y: Papaya—Glimpse of early sex chromosome

    Genetic mappers say that the papaya plant has a rudimentary Y chromosome, the youngest one in evolutionary terms yet found, offering a glimpse of the evolution of sex chromosomes.