Nature highlights

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

• Signalling: Facial development in the embryo
  
• NRM quantum computing: Realizing Shor's algorithm
• Chromosome 20: Honing the genome
• Biomechanics: Gait keepers
• Meteorites: One lump or two?
• Olivine: Unmixed message
• Phenotypic plasticity: Maternal concern
• Atherosclerosis: Grape news

20/27 December 2001 table of contents