News

  1. Earth

    Faults can reseal months after quakes

    Measurements in southern China find quick healing of fractured rock.

    By Erin Wayman
  2. Science & Society

    Math targets cities’ essence

    New formula relates city size to infrastructure, productivity.

    By Rachel Ehrenberg
  3. Tech

    Twisted light transmits more data

    Spiral beams allow multiple information streams in one cable.

    By Andrew Grant
  4. Life

    Ancient horse’s DNA fills in picture of equine evolution

    An entire genome compiled from a 700,000-year-old bone yields new information about equine history.

    By Tina Hesman Saey
  5. Animals

    Lemurs’ group size predicts social intelligence

    Primates that live with many others know not to steal food when someone is watching.