News

  1. Health & Medicine

    Ultrasound boosts drug delivery to tumors

    A beam of ultrasound can make the blood vessels that infiltrate cancerous growths leakier than normal.

    By Damaris Christensen
  2. Health & Medicine

    Weak appetite in elderly ties to hormone

    A hormone known to suppress appetite is more abundant in seniors than in young adults and has a greater effect in squelching hunger in elderly people.

    By Nathan Seppa
  3. Animals

    Unknown squids—with elbows—tease science

    Glimpses from around the world suggest that the ocean depths hold novel, long-armed squids that belong in no known family.

    By Susan Milius
  4. Earth

    Forest-soil fungi emit gases that harm ozone layer

    Laboratory tests reveal for the first time that certain types of common fungi can produce ozone-destroying methyl halide gases.