Nature highlights

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

• Population genomics: Mitochondria and human origins
• CO₂ and global climate: Is history bunk?
• US election: Butterfly ballots do cause bias
• Immune response to DNA: Know thyself
• Astronomy: Super power
• Plant Biology: A New Leaf
• Flying dinosaur: Long march for birds
• Tsunami: Up on the beach
• Analgesia: Twin powers

7 December 2000 table of contents