Climate adaptation has emerged as a mainstream risk management strategy for assisting in maintaining socio-ecological systems within the boundaries of a safe operating space. Yet, there are limits to the ability of systems to adapt. Here, we introduce the concept of an “adaptation frontier”,...

This study examines changes from 2000 to 2010 in the adoption of sustainability plans and policies in a sample of U.S. cities. The study’s framework posits sustainability initiatives as communitarian outcomes intended to meet the needs of both current and future generations. We hypothesize,...