Portland, Oregon is the only city in North America that has managed to reduce emissions below 1990 levels, despite an 18% population growth. The city recently passed the Climate Change Action Plan (CAP), which commits the city to reducing overall emissions by 80% below 1990 levels by 2050. A notable element of CAP is that it does not focus on things that governments have direct control over. Read an interview with Michael Armstrong, Deputy Director of Portland’s Bureau of Planning and Sustainability.