Uncategorized

  1. Cells in bloodstream don’t refill ovaries

    Contrary to a report published last year, cells that circulate in a female mammal's blood don't seem to restock its egg supplies.

    By Christen Brownlee
  2. Astronomy

    Galactic de Gustibus

    About 13 billion years after its birth, our galaxy is still packing on the stars.

    By Ron Cowen
  3. Anthropology

    Mexican find reveals ancient dental work

    A 4,500-year-old human skeleton found in Mexico represents the earliest instance in the Americas of intentionally modified teeth, apparently to create space for a ceremonial mouthpiece.

    By Bruce Bower

  4. 19699

    Please check the picture in this article. The teeth shown are lower teeth.