Welcome to the second annual Worth Cities issue. In the year since we first listed the 15 most dynamic cities in America, cities and their surrounding regions have only grown in importance. They drive our national economy, are responsible for a vast amount of business innovation and creation, and have become the places where our most skilled young people want to live and work. They lead in everything from how to handle environmental challenges to immigration issues to the latest trends in art, food and transportation. These are the 2017 Worth Cities.