Uncategorized

  1. Climate

    Carbon dioxide not to blame in ice age mystery

    Scientists look at seafloor sediments to determine that a long-term decline in carbon dioxide is not the reason for less frequent ice ages.

    By Sid Perkins
  2. Health & Medicine

    Gene silencing in colorectal cancer may prove useful

    Genetic irregularity in colorectal cancer cells might serve as a biomarker of risk for this malignancy.

    By Nathan Seppa
  3. Astronomy

    Supernova may be in a new class

    A recently discovered stellar explosion may be part of a new class of supernova.

    By Ron Cowen
  4. Paleontology

    Bird in the hand

    Fossilized fingers strengthen evolutionary link between dinosaurs and avian relatives.