While markets in general are a good way to organize economic activity, sometimes they lead to decisions that are not conducive to a sustainable lifestyle.  This has been the perspective that guides my teaching and research.  In my research I use microeconomic theory to analyze a variety of environmental and urban issues by looking at the tension between private and socially optimal choices.  I have explored various topics including green product markets, voluntary environmental agreements, energy efficiency and big box competition.  I have closely explored the tension between what is socially optimal and what self-interested individuals choose to do.  I have carefully considered various mechanisms necessary to change individual incentives and highlighted the tradeoffs involved with each.  My research has offered significant contributions to the literature which I hope will result in more informed policy making.