News

  1. Lease on Life: Old mice live longer when given young ovaries

    Implanting young ovaries in old mice extends their life expectancy.

    By Sorcha McDonagh
  2. Materials Science

    Super Fibers: Nanotubes make tough threads

    New fibers made from carbon nanotubes and a polymer appear tougher than any other known synthetic or natural material.

    By Jessica Gorman
  3. Health & Medicine

    Full-Length Pregnancy: Progesterone product may reduce premature births

    A drug related to the female hormone progesterone helps some pregnant women who are prone to premature birth extend their pregnancies.

    By Nathan Seppa
  4. Anthropology

    African Legacy: Fossils plug gap in human origins

    Scientists who discovered three partial Homo sapiens skulls in Ethiopia that date to nearly 160,000 years ago say that the finds document humanity's evolution in Africa, independently of European Neandertals.