Uncategorized

  1. Astronomy

    MESSENGER captures new images of Mercury during a third passage

    MESSENGER flew past Mercury for a third time on September 29. The spacecraft's mission will continue, with MESSENGER due to settle into a yearlong orbit around Mercury in March 2011.

    By Ron Cowen
  2. Chemistry

    Earth’s ‘boring billion’ years blamed on sulfur-loving microbes

    A new study suggests these organisms could have kept oxygen levels low and waters toxic, stalling the evolution of complex life.

    By Rachel Ehrenberg
  3. Paleontology

    Parasite may have felled a mighty T. rex

    An infection known to afflict modern birds may have led to starvation in several dinosaurs.

    By Laura Sanders
  4. Paleontology

    Fish death, mammal extinction and tiny dino footprints

    Paleontologists in Bristol, England, at the annual meeting of the Society of Vertebrate Paleontology report on fish fossils in Wyoming, the loss of Australia’s megafauna and the smallest dinosaur tracks.