Uncategorized

  1. Math

    Spirals inspire walking aids for people with disabilities

    Long admired for their beauty, spirals have inspired a shoe that may help disabled people walk. The shapes make for a better crutch and an entertaining skateboard as well.

    By Dana Mackenzie
  2. Paleontology

    Some trilobites sported dual digestive tracts

    CT scans reveal trilobites with two-lane digestive tracts.

    By Thomas Sumner
  3. Life

    Close look at new fungus reveals origins, spread of salamander killer

    A second chytrid fungus described last year targets salamanders and may be spreading in the animal export trade.

    By Susan Milius
  4. Earth

    Early animals couldn’t catch a breath

    Low levels of oxygen may have hindered evolution of animal life hundreds of millions of years ago.