世界：新的全球移民数据集提供了前所未有的流动趋势视角

Country: World Source: International Organization for Migration Berlin, 7 October 2026 – Policymakers and researchers seeking to understand how migration is changing globally have long faced a fundamental challenge: while data showing where migrants live are available for over half a century, there has been no comprehensive record of how migration movements between countries have evolved year by year over this period. The challenge is becoming increasingly urgent as countries respond to demograp