News

  1. Life

    Researchers distinguish two different types of blood stem cells

    Working in mice, scientists find that red and white blood cells arise from different progenitors.

    By Laura Sanders
  2. Physics

    Aluminum superatoms may split water

    Metal clusters could create hydrogen for fuel, simulations suggest.

    By Laura Sanders
  3. Health & Medicine

    Old drug may be first choice for childhood petit mal epilepsy

    Three-way trial shows ethosuximide edging out two newer choices.

    By Nathan Seppa
  4. Earth

    Earth knocked for a loop

    Chile’s February 27 temblor, tectonically linked to another giant quake 50 years ago, sped up the Earth’s rotation and tipped the planet’s axis.