This collection reclaims public intellectuals and scholars important to the foundational work in American Studies that contributed to emerging conceptions of an "ecological citizenship" advocating something other than nationalism or an "exclusionary ethics of place." Co-editors Adamson and Ruffin recover underrecognized field genealogies in American Studies (i.e. the work of early scholars whose scope was transnational and whose activism focused on race, class and gender) and ecocriticism (i.e. the work of movement leaders, activists and scholars concerned with environmental justice whose work predates the 1990s advent of the field). They stress the necessity of a confluence of intellectual traditions, or "interdisciplinarities," in meeting the challenges presented by the "anthropocene," a new era in which human beings have the power to radically endanger the planet or support new approaches to transnational, national and ecological citizenship. Contributors to the collection examine literary, historical, and cultural examples from the 19^th century to the 21^st. They explore notions of the common—namely, common humanity, common wealth, and common ground—and the relation of these notions to often conflicting definitions of who (or what) can have access to "citizenship" and "rights." The book engages in scholarly ecological analysis via the lens of various human groups—ethnic, racial, gendered, coalitional—that are shaping twenty-first century environmental experience and vision.