Uncategorized

  1. Astronomy

    Planet Signs? Sifting a dusty disk

    Infrared spectra of a disk of debris surrounding the young star Beta Pictoris reveals three distinct bands of dust, suggesting the location of a possible planet flanked by belts of asteroids or comets.

    By Ron Cowen
  2. Health & Medicine

    Carotid Overhaul: Stents and surgery go neck and neck

    Mesh cylinders called stents work as well as or slightly better than surgery in opening blocked carotid arteries in high-risk patients.

    By Nathan Seppa
  3. Earth

    Global warming won’t boost carbon storage in tundra

    The notion that a warmer climate in arctic regions will lead to enhanced carbon sequestration in tundra ecosystems isn't supported by field data.