News

  1. Health & Medicine

    Blending In: Dissolvable stents promise to protect arteries

    A biodegradable magnesium stent props open clogged blood vessels and then dissolves, circumventing the problems linked to permanent metal stents.

    By Nathan Seppa
  2. Anthropology

    Chicken of the Sea: Poultry may have reached Americas via Polynesia

    Polynesians may have traveled back and forth to South America more than 600 years ago, introducing chickens to the Americas in the process.

    By Bruce Bower
  3. Tech

    Nanotech bubbles

    Creating large-scale, regular arrays of nanoscale components is now almost as easy as blowing bubbles.

    By Davide Castelvecchi
  4. Chemistry

    In a Fix: Agricultural chemicals disturb a natural relationship

    Several pesticides can disrupt a partnership that enables certain plants to take up nitrogen by enlisting the help of bacteria.