News

  1. Health & Medicine

    Donor dilemma

    Blood donors age 16 or 17 are more apt to faint than older donors.

    By Nathan Seppa
  2. Life

    Reviving extinct DNA

    For the first time, scientists have resurrected a piece of DNA from an extinct animal — the Tasmanian tiger. The researchers engineered mice with a piece of the long-gone marsupial's DNA that turns on a collagen gene in cartilage-producing cells.

    By Tina Hesman Saey
  3. Tech

    I, computer

    Bacteria that can "flip pancakes" with their DNA are the first microbes engineered to be living computers.

    By Patrick Barry
  4. Health & Medicine

    Itchy and scratchy

    People with a close relative who has had shingles face a heightened risk of getting the skin disease, and should probably be first in line to get the vaccine.