Geography is concerned with the location and arrangement in space of human and natural phenomena, and with the interrelationships between people and their environments. The Department of Geography has four major areas of concentration. Earth Systems Science focuses on the fundamental processes that dominate the atmosphere, hydrosphere, lithosphere, and biosphere, their characteristics and complex interactions, and their impact on human life and society. Geographic Information Systems focuses on the theoretical foundations geographical information science, the development and use of state-of-the-art software and emerging technology, and the collection, processing, and interpretation of geospatial information. International Trade focuses on economic and business geography, and it prepares students to critically assess the process of globalization operating in the world today, including the growth of multinationals and foreign direct investment, international trade, the internationalization of capital and financial markets, new international divisions of labor, and the rapid development of technology and innovations. Urban and Regional Analysis focuses on a wide variety of economic and social problems related to transportation, land use, urban environment, housing, work and welfare, population changes and migration, and health within a geographical context.