Uncategorized

  1. Space

    Gamma-ray burst may reveal some of oldest dust in the universe

    Remote flash may have uncovered supernova-generated dust from just 1 billion years after the Big Bang

    By Ron Cowen
  2. Life

    Bornavirus genes found in human DNA

    Researchers have found molecular fossils of an RNA virus in human and other mammalian genomes, pushing back the emergence of RNA viruses millions of years.

    By Tina Hesman Saey
  3. Space

    WISE sees its first stars

    NASA's new infrared observatory is ready for action.

    By Lisa Grossman
  4. Health & Medicine

    New test could discern serious condition early after bone marrow transplant

    Protein level in blood reveals graft-versus-host disease, may indicate severity of this complication

    By Nathan Seppa
  5. Earth

    Footprints could push back tetrapod origins

    Newly discovered trackways much older than previous evidence for sea-to-land transition.