North Africa is a diverse region with a rich history and society, part of a set of varied landscapes that make up a compounded and multiplex socio-ecosystem. Its position as a meeting point—of the desert and the sea, of the Atlantic and the Mediterranean, of North and South, of East and West—makes it a complex and rewarding area of study. This multiplicity of environments and societies means there is no one history of North Africa, it is rather a structure of imbricating stories, no one of which records the whole. The environmental history of the region is no different, as the many different ecosystems—and human relations within them—give rise to different stories and different ways to tell them. Indeed, the strength of the environmental approach to the history of the region is that it allows scholars to introduce important factors into the narrative that are otherwise left out. If history is to capture the richness of past lives, tell a compelling story of people in the world, then it needs to embrace those elements of the world that were important to people. These can be the everyday concerns with watering a garden, the spectacular catastrophes of multiyear drought, or the contemplation of what factors make a place one place and not another.
While there is this bottomless well of potential stories to tell within the environmental history of North Africa, there are some centripetal forces that hold it together. One is the geographical setting, defined by the desert, seas, and Atlas Mountains. Within this setting the relative aridity of the region is its central concern; each history has a place for water within it. The other generalizing trend over the modern period is the increasing centralization of decision-making about the management of that aridity: since 1800, small-scale and localized knowledge, practice, and control over hydrology has been eroded. More and more the local ecosystem has become the regional ecosystem, managed according to a logic shared on a global scale. The tension between these generalized trends and the multiplicity of local ecologies and stories is what gives the environmental history of North Africa its power and appeal.