In the heart of America there are cities on the verge of dissolution. They resemble more and more post-urban campaigns. A new landscape that in the belt of rust - the so-called Rustbelt, which extends from the Midwest to part of the northeast of the country - has become very common. With the abandoned factories and shops in the suburb, destroyed by fires and racial revolts in the 1960s and 1970s, more than half of the inhabitants fled from these cities. Leaving behind rubble and impoverished populations, which every day struggle for survival in an increasingly hostile environment. From the urban grasslands of Youngstown, where the municipal administration has now reduced itself to zealously planning the city's self-destruction, to the recycling and deconstruction industry in Buffalo, where visionary activists dismantle the rest of the city with wealth and love ; from the food deserts of Detroit and Philadelphia, where shops and supermarkets have disappeared and the inhabitants organize themselves with brilliant agricultural enterprises, up to cities like New York that focus on urban agriculture, to build more sustainable cities thanks to a perfect natural metabolism. This is the story of territories and populations that are not part of the consolidated representations to which we are accustomed, stories of people who invent new ways of life in environments in which having dissolved - perhaps forever - is contemporary society as we know it.