News

  1. Earth

    Life Landed 2.6 Billion Years Ago

    Unusually carbon-rich rocks found in eastern South Africa may push back the evidence of life on land to 2.6 billion years ago, more than twice the current age of indisputably terrestrial organisms.

    By Sid Perkins
  2. Health & Medicine

    Dormant Cancer: Lack of a protein sends tumor cells to bed

    Excess amounts of a protein called Myc triggers cancer in mice, but ratcheting back this supply sends the malignant cells into dormancy.

    By Nathan Seppa
  3. Earth

    Change in the Weather? Wind farms might affect local climates

    Large groups of power-generating windmills could increase wind speed, temperature, and ground-level evaporation, thereby influencing a region's climate.