With the Industrial Revolution and, more profoundly, the globalisation process of the last decades, both tourism and environmental issues have become increasingly global in occurrence. Globalisation processes amplify or replace many regional or national forces of change. Human activities have become the main cause of global environmental change (GEC), hence our era has been designated the ‘Anthropocene’. The Earth System could be approaching a planetary threshold resulting in a rapid warming pathway. In view of tourism's global importance, worldwide growth, and its tendency to create interdependencies between countries, it is appropriate to devote a chapter to the global environmental impacts of tourism. As participation in tourism increases in and between countries all over the globe, many of its environmental impacts are becoming scaled up to a global level. Minimising these guarantees a more stable system, which is also essential for tourism.
