Nature highlights

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

• Feeling the heat:
  Climate change and biodiversity loss
  
• Atmospherics: The oxygen horizon
• Learning right from left
• Echoes of supernova 1993J
• High winds high on Jupiter
• Membrane screening: Colloidal option
• Methane gas: Free to go
• Active sperm from stem cells
• Plant biology: Do they know it's winter?

8 January 2004 table of contents