As the gears of federal government have ground to a halt, a new energy has been rocking the foundations of our urban centers. From Atlanta to Seattle and points in between, cities have begun seizing the initiative, transforming themselves into laboratories for progressive innovation. Income inequality, affordable housing, climate change, sustainable development, public health, participatory government—cities are tackling them all, bringing new urgency to some of the most vital questions of the day. Welcome to the age of big city progressivism! Cities Rising is The Nation’s contribution to the conversation.