News

  1. Health & Medicine

    Zapping Wayward Cells: Therapy sheds light on transplant complication

    Ultraviolet light can curb graft-versus-host disease, a common complication of bone marrow transplants, a study of mice shows.

    By Nathan Seppa
  2. Math

    Primal Progress: Pattern hunters spy order among prime numbers

    The population of prime numbers includes an infinite collection of arithmetic progressions.

    By Erica Klarreich
  3. Earth

    Lava Life: Hints of microbes in ancient ocean rocks

    Microscopic, carbon-lined tubes in lava that erupted onto the ocean floor about 3.5 billion years ago were etched by microbes, a number of signs suggest.

    By Sid Perkins
  4. Physics

    Photon Double Whammy: Careening electrons may rev up solar cells

    A newfound cue ball effect in nanometer-scale crystals of a semiconductor compound may lead to highly efficient solar cells made from such nanocrystals.