The seventh edition of this classic student text explores the multitude of impacts that humans have had over time upon vegetation, animals, soils, water, landforms and the atmosphere. It also looks into the future and considers the ways in which climate changes and modifications in land cover may change the environment in coming decades. Extensively re-written, it contains many new statistical tables, figures, and references. It is essential reading for undergraduates in geography and environmental science, and for those who want a thorough, wide-ranging and balanced overview of the impacts of humans upon natural processes and systems from the Stone Age to the Anthropocene and who wish to understand the major environmental issues that concern the human race at the present time.