Uncategorized

  1. Anthropology

    Red-Ape Stroll

    Wild orangutans regularly walk upright through the trees, raising the controversial possibility that the two-legged stance is not unique to hominids.

    By Bruce Bower
  2. Earth

    Signs of Life?

    Life's effects on a planet's terrain show up only in surprisingly subtle ways.

    By Sid Perkins
  3. Humans

    Letters from the August 4, 2007, issue of Science News

    Here comes the sun When “Reaching for Rays: Scientists work toward a solar-based energy system” (SN: 5/26/07, p. 328) says that “scientists don’t expect traditional silicon-based solar cells to become competitive with fossil fuels,” one has to ask, “Ever?” Can anyone accurately predict the future price of polysilicon or of fossil fuels? Peter A.