Book excerpt: Reflecting a variety of disciplines, approaches, and viewpoints, this collection of ten essays by both Indians and non-Indians covers a wide range of historical periods, areas, and topics concerning the changes in Indian environmental experiences. Subjects include the role of the environment in religions; white practices of land use and the exploitation of energy resources on reservations; the historical background of sovereignty, its philosophy and legality; and the plight of various uprooted Indians and the resulting clashes between Indian groups themselves as they compete for scarce resources. From the Canadian Subarctic to Ontario's Grassy Narrows, from the Iroquois to the Navajo, American Indian Environments is an important contribution to understanding the Indians' attitude toward and dependence upon their environment and their continued struggles with non-Indians over it.