News

  1. 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
  2. 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.

    By Janet Raloff
  3. Health & Medicine

    Carbon monoxide may limit vascular damage

    Carbon monoxide given in small doses to rats can prevent injury to blood vessels caused by surgery.

    By Nathan Seppa
  4. Archaeology

    Farming sprouted in ancient Ecuador

    Analyses of microscopic plant remains from two archaeological sites indicate that people began to grow squash in Ecuador's lowlands between 10,000 and 9,000 years ago, when agriculture was also taking root in Mexico.