This issue of Evidence Matters highlights ways sustainability is being defined, measured, and practiced throughout the U.S. The lead article looks at steps being taken to resolve the challenges related to improving energy efficiency of multifamily housing. “Measuring Sustainability” reviews how sustainability has been defined and measured during its brief history, and how rapid advances in the field are allowing governments, businesses, and individuals to look at it in new and more comprehensive ways. The last article describes the techniques employed by regional planning organizations in the Salt Lake City and Sacramento regions that have built strong and broad support for their sustainability initiatives.

In this Issue:

• Quantifying Energy Efficiency in Multifamily Rental Housing
• Measuring Sustainability
• Confronting the Future: Case Studies in Regional Planning and Consensus- Building
• Additional Resources