Nature highlights

Key research and analysis from this week's Nature magazine.

• Lunar topography: Icy volcanism on Ganymede
• Magnesium diboride: A serendipitous superconductor
• Breast cancer: Role of chemokines in targeting metastasis
• Early life: Sulphate-reducing microbes in the Archaean
• Cystic fibrosis: Bicarbonate clue
• Orbit and climate: Milankovitch cycles
• Earthquakes: Unreliable indicator
• Fish evolution: Ancient eyestalks

1 March 2001 table of contents