Website: BuildingEnvelopes

Sponsored by a nonprofit consortium of companies, universities, and research centers, this Web portal aims to provide the building industry with practical information on designing energy-efficient buildings. Free registration gives you access to a wealth of backgrounders and tools covering eight key topics:

• Envelope systems
  
• Heating and cooling
  
• Lighting
  
• Ventilation
  
• Innovative materials
  
• Regulations
  
• Alternative energy sources
  
• Human factors in energy efficiency

Also includes green-building news and events.