Uncategorized

  1. Animals

    Thoroughly Modern Migrants

    Butterflies and moths are causing scientists to devise a broader definition of migration and this has raised some old questions in new ways.

    By Susan Milius
  2. Paleontology

    Calling all orthodontists. . .

    Researchers have unearthed fossils of a theropod dinosaur whose front teeth grew almost directly forward, which sets it apart from all other related species.

    By Sid Perkins
  3. Paleontology

    Allosaurus as a Jurassic headbanger

    The skull of the carnivorous dinosaur Allosaurus fragilis can resist levels of stress much higher than those expected from chewing, which may provide insight into the animal's method of attacking its prey.

    By Sid Perkins
  4. Paleontology

    The last ice age wasn’t totally icy

    Radiocarbon dating of fossils taken from caves on islands along Alaska's southeastern coast suggest that at least a portion of the area remained ice-free during the last ice age.