Uncategorized

  1. Chemistry

    Unlikely ion made in lab

    Chemists have created a molecule—the pentamethylcyclopentadienyl cation—that many researchers thought was too unstable to exist long enough to be identified or studied.

    By Jessica Gorman
  2. Animals

    Rebranding the Hyena

    Zoologists are hoping that long-term ecological studies of the spotted hyena will assist in dispelling the animal's undeservedly bad reputation.

    By John Pickrell
  3. Health & Medicine

    Mammograms on Trial

    New controversy about old data has physicians, women, and policy analysts struggling to decide whether all women should be screened with mammography in order to reduce deaths due to breast cancer.

    By Damaris Christensen

  4. From the April 23, 1932, issue

    WELDING OFFERS CAMERA STRIKING FIELD OF BEAUTY By no means a trivial by-product of electric welding is the field of beauty the new art is opening up for photographers.