Book excerpt: A broad and comprehensive exploration of the role of the ecological sciences in sustainability for undergraduates.The urgent quest for more sustainable patterns of development has placed new and difficult demands on both scientists and policy makers as they seek to establish more informed and effective policy processes and management regimes in the the face of pervasive uncertainty. Written by an international group of authors from a range of disciplines - ecology, geography, law, policy analysis and others - the chapters explore issues of scientific legitimacy, public participation, non-governmental organisations, inter-sectoral communication and pragmatic public policy across a wide range of ecosystem management contexts.