Nature highlights

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

• Ecology: Amphibian populations in decline
• Kyoto Protocol: Counting the costs of emissions
• Glass fragility: A thermodynamic connection
• Heart failure: Can adult stem cells repair the damage?
• Methane: Titan's gas supply
• Hospitals: Why are we waiting?
• Protein evolution: Needle in a haystack?
• Hearing: Cricket pitch

5 April 2001 table of contents