The modern era has provided the means to migrate to far off lands like no other time in history, jet travel along with higher standards of living has meant people could pick up and move to another country if they so desired. Of course, there are also limiting factors, such as laws regulating immigration and diminished desire to leave one’s homeland if things are going well. At the same time, with massive computer infrastructures and the World Wide Web, it would seem that some entity would exist that monitors global human migration—the United Nations for example. But that is not the case, as Abel and Sander discovered, leading them to conduct a study of their own. Their work was greatly aided by an initiative by the United Nations last year to merge migration numbers reported by different countries into a single format.
Read more at: Phys.org