This volume of specially commissioned interpretative essays marks the centenary of the establishment of the International Geographical Union in 1922. Written by leading human and physical geographers from all parts of the world, A Geographical Century considers the history and present condition of geography as an international science. Based on the latest research, A Geographical Century provides new and critical analyses of the different forms of geographical internationalism that emerged during the 20 th century; the changing relations between geography and cognate disciplines in the natural and social sciences; the geopolitics of international geographical collaboration; and the prospects of geography as a 21 st  century international science.