Volume 430 Issue 6997, 15 July 2004


  • Editorial |

    Muammar Gaddafi, the Libyan leader, can demonstrate his aspirations to statesmanship by using the occasion of the XV International AIDS Conference to free health workers unjustly sentenced to death for infecting patients with HIV.


News in Brief


  • News Feature |

    A few brave postdocs are mixing science with school teaching. Mark Peplow asks them what they give to, and get from, the children.

    • Mark Peplow
  • News Feature |

    Scientists find it hard enough to pin down evidence of early life on our own planet. How on Earth do we plan to determine whether life exists elsewhere? John Whitfield finds out.

    • John Whitfield


Books and Arts



  • Essay |

    Red blood cell vasodilation: nitric oxide and haemoglobin help to match blood flow to metabolic demand.

    • David J. Singel
    •  & Jonathan S. Stamler

News & Views

  • News & Views |

    The seemingly unpredictable ‘boom and bust’ of insect-pest populations will be better understood with the advent of a deceptively simple model combining field and laboratory data with earlier theories.

    • Lewi Stone
  • News & Views |

    Combining the imaging power of magnetic resonance and the sensitivity of atomic force microscopy has created a hybrid technique that can resolve single spins beneath the surface of a sample.

    • P. Chris Hammel
  • News & Views |

    In mammals, is the three-dimensional body plan ingrained in the egg at or before fertilization? The answer is ‘maybe, but then again maybe not’. Less invasive techniques might help to resolve matters.

    • Gerald Schatten
    •  & Peter Donovan
  • News & Views |

    Plants depend on structures called stomata to regulate gas exchange with the air, and their positioning is crucial. A key factor controlling stomatal development and arrangement has now been found.

    • Laura Serna
  • News & Views |

    Observations of the Hanle effect have revealed the existence of small-scale ‘hidden’ magnetic flux on the quiet Sun. The magnetic-energy density of this hidden flux is much larger than previously thought.

    • Jan Olof Stenflo
  • News & Views |

    How does our rump come to be separated from our head, instead of being right behind our ears? Studies of the elongation of the developing embryo reveal some remarkable underlying mechanisms.

    • Ray Keller

Research Highlights

Brief Communications






  • Careers and Recruitment

  • Careers and Recruitment |

    Matching the march of evolution, developmental biology is branching out to encompass a wide variety of disciplines. As a result, recruiters want skills as well as qualifications, says Ricki Lewis.

    • Ricki Lewis
  • Career View

  • Career View |


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