The influence of human economies and cultures on ecosystems is particularly striking in the new worlds into which Europeans have expanded over the past five hundred years. Using a comparative and multidisciplinary approach, Beinart and Coates examine this neglected aspect of the history of settler incursion and dominance in two frontier nations, the USA and South Africa. They also seek to explain change in indigenous ideas and practices towards the environment, and discuss the rise of popular environmentalism up to the present day.