And the 14 Grand Engineering Challenges of the 21st Century Are...

From Wired Science:

• Make solar energy affordable.
• Provide energy from fusion.
• Develop carbon sequestration methods.
• Manage the nitrogen cycle.
• Provide access to clean water.
• Restore and improve urban infrastructure.
• Advance health informatics.
• Engineer better medicines.
• Reverse-engineer the brain.
• Prevent nuclear terror.
• Secure cyberspace.
• Enhance virtual reality.
• Advance personalized learning.
• Engineer the tools for scientific discovery.