News

  1. Health & Medicine

    A sticky problem solved

    Researchers have identified a protein integral to making blood clot, a finding they hope will lead to better drugs for preventing clots in people at risk of heart attack or stroke.

    By Damaris Christensen
  2. Plants

    Dead pipes can still regulate plants’ water

    Physiologists say they have demonstrated for the first time that dead xylem cells in plant plumbing can control water speed.

    By Susan Milius
  3. Humans

    Explosions, not a collision, sank the Kursk

    Analyses of the shock waves recorded at seismic stations across northern Europe indicate that the Russian submarine Kursk sank due to onboard explosions, not a run-in with another vessel.