In the first book devoted exclusively to the ecopoetics of the twenty-first century, Lynn Keller examines poetry of what she terms the "self-conscious Anthropocene," a period in which there is widespread awareness of the scale and severity of human effects on the planet. Recomposing Ecopoetics analyzes work written since the year 2000 by thirteen North American poets--including Evelyn Reilly, Juliana Spahr, Ed Roberson, and Jena Osman--all of whom push the bounds of literary convention as they seek forms and language adequate to complex environmental problems. Drawing as often on linguistic experimentalism as on traditional literary resources, these poets respond to environments transformed by people and take "nature" to be a far more inclusive and culturally imbricated category than conventional nature poetry does. This interdisciplinary study not only brings cutting-edge work in ecocriticism to bear on a diverse archive of contemporary environmental poetry; it also offers the environmental humanities new ways to understand the cultural and affective dimensions of the Anthropocene.