Uncategorized

  1. Health & Medicine

    Fast Start: Sex readily spreads HIV in infection’s first weeks

    People with HIV are many times more infectious to their sexual partners in the weeks or months just after they acquire the virus than they are later on, a study in Uganda demonstrates conclusively.

    By Ben Harder
  2. Ecosystems

    Ambush Ants: Beware the moldy patch on that branch

    Tiny tropical ants build shaggy platforms on plants and hide underneath them, poised to reach out and capture insects that may be far larger than themselves.

    By Susan Milius
  3. Astronomy

    Distant Dust: Asteroid belt or boiling comet?

    A swarm of warm dust surrounding a star 41 light-years from Earth may be a sign of the closest extrasolar analog to the solar system's asteroid belt.