About 3% of the world's population does not live in their native countries, including those that can be classified as refugees or asylum seekers. People Movin [peoplemov.in] by Carlo Zapponi is a simple but oh-so-beautiful and still effective interactive graph that highlights all these migration patterns in the world as of the year 2010 in one single view.
Based on open datasets from the World Bank and the U.S. Census
Beurau Bureau, the migration data is represented as one, large flow chart that connects the origin countries (left) with the destination countries (right). The relative thickness of each line represents the amount of immigrated people. Countries can be selected in the 2 columns, or in the small windows that pop up to provide more detailed information.
Well, there is that plus the website is actually also the result of developing a flow chart visualization framework based on HTML5 technologies.