Book excerpt: The Americas and Oceania: Assessing Sustainability provides extensive coverage of sustainability practices in two regions linked culturally and historically by their relative isolation before the Columbian exchange, by their colonization after it, and by the challenges of pollution, resource overuse, and environmental degradation. Regional experts and international scholars focus on environmental history in areas such as the South Pacific islands, now particularly threatened by rising ocean levels due to climate change, and on countries whose governments and corporations can play a major role in promoting or discouraging sustainable choices: Brazil, an emergent power on the world stage; the United States, the world's third most populous nation; and New Zealand, seemingly on its way to becoming an enviable model of sustainable development.