Humans have been part of the Earth’s history for a very short time, but our impact on the world around us has been considerable. The two major moments of accelerations of human impact were the development of agriculture and the Industrial Revolution. ‘Origins’ explains how they laid the foundations for concern about the sustainability of ways of life. The 1970s saw a growing awareness that negative environmental impacts might be a result of a mistaken whole development path, rather than local and isolated difficulties. An environmental political movement coalescing around those problems offered an alternative political platform, which has made a dramatic impact on politics in many ways and at many levels.