Since the dawn of human civilization, forests have provided us with food, resources, and energy. The history of human development is also one of forest loss and transformation, and yet even in our increasingly urbanized societies we remain surprisingly dependent on forests for a wide range of goods and services. Moreover, forests still retain a remarkable hold on our environmental values. In an era of continuing tropical deforestation and temperate forest resurgence, and in the midst of uncertainties of climate and land use changes, it is more important than ever to understand what forests are, how they contribute to our livelihoods, and how they underpin our cultural histories and futures. In this Very Short Introduction Jaboury Ghazoul explores our contrasting interactions with forests, as well as their origins, dynamics, and the range of goods and services they provide to human society. Ghazoul concludes with an examination of the recent history of deforestation, transitions to reforestation, and the future outlook for forests particularly in the context of expected climate change.