Uncategorized

  1. Paleontology

    Bob, Bob, Bobbin’ Along: Dinosaur buoyancy may explain odd tracks

    New lab experiments and computer analyses may explain how some of the heftiest four-legged dinosaurs ever to walk on Earth could have left trackways that include the imprints of only their front feet.

    By Sid Perkins
  2. Astronomy

    When really big winds collide

    A newly released image shows dramatic details of the Crescent nebula, a giant gaseous shell created by outbursts of a massive star about to explode as a supernova.

    By Ron Cowen

  3. Bad for the Bones: Thwarted hormone leads to skeletal decay

    Thyroid-stimulating hormone plays an unexpected role in bone remodeling.

    By Kate Ramsayer
  4. Health & Medicine

    First Viruses, Now Tumors: AIDS drug shows promise against brain cancers

    A potential AIDS drug may also slow the growth of deadly brain tumors.