This Very Short Introduction begins by introducing the concept of sustainability and how it has developed. The central chapters consider four key concepts crucial to sustainability: a) material and energy flows in consumption and production; b) technological interventions for a sustainable society; c) tipping points, and resilience in natural and social systems; and d) renewability and circularity in the economy. In the concluding chapter, Saleem Ali explores political means of managing anthropogenic change for a more sustainable society.