Industrial collapse scars cities around the globe. Urban heroes are transforming their cities into more sustainable communities. By the dawn of the 21st century, many of the world’s once-powerful centers of industry had lost jobs and population to a devastating degree. These urban centers include Detroit, Philadelphia, and Youngstown, in the United States, and Torino, Italy, and the Ruhr Valley region of Germany in Europe. Critics claim these urban centers are finished, with no hope of revival or reinvention. This movie is about the people who disagree…