Uncategorized

  1. Earth

    Traces of Trouble

    Scientists and engineers are investigating how to stem the flow of naturally-occurring and synthetic estrogens that, when released from waste water treatment plants and livestock operations, can harm aquatic life.

    By Aimee Cunningham
  2. Math

    Ancient Islamic Penrose Tiles

    Medieval Islamic artisans developed a process for creating elaborate, nonrepeating patterns now associated with Penrose tiles.

    By Julie Rehmeyer
  3. Humans

    From the February 27, 1937, issue

    Testing thermometers, measuring clouds, and a very useful mineral.

    By Science News
  4. Humans

    Lucid Movement

    Lucid Movement is a regularly updated video blog that documents the world through the lens of a high-speed video camera.