This paper begins by the statement of some points of divergence with founding textsby French geographerson globalization, particularly about the nature, length and periodization of this process. Starting from a definition of globalization as a geohistorical process, with modernity and capitalism as its main agents, the Author supports a notion going against most of these geographies of globalization. The paper proposes the thesis of the World’s homogenization, proceeding in spite of its growing economic inequality. This argument is founded on two notions, the main objective of this paper : the « geographic opening » and « geographic globalization » of the various regions of the Earth. Their connection to the World System and the diffusion of modern geographies during the historical periods of the globalization process entail an erosion of Earth’s diversity or « geodiversity ». Examples of these notions are given in the last part of this paper through a short description of the four periods of the geographic globalization, from the XVth century to the present. The conclusion sets out the question of the Earth as ecumene threatened by globalization.