The Harold and Margaret Sprout Award was established in 1972 and named in honor of two pioneers in the study of international environmental problems. The award is sponsored by the Environmental Studies Section (ESS), and is given annually to the best book in the field - one that makes a contribution to theory and interdisciplinarity, shows rigor and coherence in research and writing, and offers accessibility and practical relevance. Nominated books should address some aspect of one or more environmental, pollution or resource issues from a broadly international or transnational perspective, including works in (for example) global, interstate, transboundary, North-South, foreign policy, comparative or area studies. Environmental subjects of books can include (for example) environmental law, diplomacy, transnational activism, natural resource use, global change, sustainable development, biodiversity, transboundary pollution control, and the like.