Nature highlights

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

• Palaeontology: Up in the air
• DNA: Molecule of the year
  
• Commentary: When to boycott
• Climate: ocean-to-ocean
  
• Dioxins: reduced circumstances
• The first quasars: gas fuelled
• Bird flight: U and non-U
• Polyglutamine diseases: red route
• Sexual selection: After the event
• Mesoporous silica: latest release

23 January 2003 table of contents