Global migration has increased from 13 million people per year in 2000 to around 35 million in 2023. The data, published in Nature on 10 June1, come from the most detailed maps of global migration produced in the 33 years. Researchers analysed the number of people moving to and from 230 countries and territories each year between 1990 and 2023, training an artificial-intelligence model on several sources of migration data (see 'A global picture of human migration'). The study reveals the patterns of migration affected by drivers such as economic change, climate, conflict and policy reforms ' for example, the largest single instance of people migrating occurred in 1994, with nearly 950,000 people moving from Rwanda to the Democratic Republic of the Congo following the Rwandan civil war. The data, which can be explored on the researchers' website, will be a useful resource for 'planning purposes where migration is relevant', such as schooling, social benefits and labour markets, says...
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