Uncategorized

  1. Planetary Science

    Signs of Water Flow: Oceans of data point to ancient Martian sea

    A robotic rover on Mars has found strong evidence that some rocks near the Martian equator were laid down by a shallow, ancient ocean, indicating one of the most likely places to look for remains of life on the Red Planet.

    By Ron Cowen
  2. Anthropology

    Evolution’s Lost Bite: Gene change tied to ancestral brain gains

    In a controversial new report, a research team proposes that an inactivating gene mutation unique to people emerged around 2.4 million years ago and, by decreasing the size of jaw muscles, set the stage for brain expansion in our direct ancestors.

    By Bruce Bower
  3. Humans

    Letters from the March 27, 2004, issue of Science News

    Nobody’s board The article “Danger on Deck?” (SN: 1/31/04, p.