Book excerpt: Over the last several decades, scholars and practitioners have progressively acknowledged that we cannot consider cities as the place where nature stops anymore, resulting in urban environments being increasingly appreciated and theorized as hybrids between nature and culture, entities made of socio-ecological processes in constant transformation. Spanning the fields of political ecology, environmental studies, and sociology, this new direction in urban theory emerged in concert with global concern for sustainability and environmental justice. This volume explores the notion that connecting with nature holds the key to a more progressive and liberatory politics.