News

  1. Materials Science

    Ancient seal technology shows its age

    Modern technologies reveal than an ancient method of engraving tough quartz in Mesopotamia was adopted some 1,500 years later than scholars had thought.

    By Jessica Gorman
  2. Health & Medicine

    Cultured cells reverse some eye damage

    Transplants using bioengineered corneal stem cells grown on an amniotic membrane can vastly improve vision in people who are nearly blind because of damaged corneas.

    By Nathan Seppa
  3. Ecosystems

    Ultimate Sea Weed Loose in America

    The unusually invasive strain of seaweed that has been smothering coastal areas of the Mediterranean has shown up in a California lagoon, the first sighting of this ecologically devastating alga in the Americas.