Nature highlights

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

• Evolution of complexity
• Pandemic in the wings?
• Natural born toolmakers
• Snowball Earth goes down a storm
• Proteins on the move
• When worlds collide
• Stellar performance
• Mammal bites dinosaur
• How complex is 'complex'?
• Genome share
• Malaria vaccine hope

13 January 2005 table of contents