| Sumario: | This section presents abstracts of the articles featured in the 2000 issue of the International Social Science Journal. Over the last 50 years, the volume and significance of international migration has grown rapidly. Every region in the world, and most of the states within them, are now countries of immigration or emigration--and sometimes both. This article examines international migration trends since the Second World War and reviews UNESCO program activities. Globalization leads to increases in all kinds of cross-border flows, including movements of people. The article reviews causes and patterns of migration, and discusses some key issues: migration and development, international cooperation, settlement and ethnic diversity, and migration as a challenge to the nation-state. The article surveys the major contemporary explanations of migration, starting with the neo-classical theory, and then the array of theories and conceptual frameworks that have flourished in the last quarter of the century. The survey highlights the fact that in its relatively short history, theorizing about migration has taken the form of a string of separate, generally unconnected theories, models, conceptual frameworks and empirical generalizations, rather than a cumulative sequence of contributions.
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