Nature highlights

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

• Development: Ins and outs of cell signalling
  
• Wave-particle duality: Electrons diffracted by light
• Glucose metabolism: PGC-1 targets insulin/cAMP axis
• Nuclear fusion: Hit and mix
• Hypoxia: Breathe easy
• Black holes: Beyond the Galaxy
• Cladistics: Web of relations

13 September 2001 table of contents