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The first project is the Global Flows of Refugees, where Nikola Sander and Ramon Bauer have used interactive circular plots to explore refugee flows between countries, regions, etc. The plot is quite effective in showing how flow sizes and origin-destinations change from 2013 to 2014.
The second dataviz comes form the Refugee Project, which brings some geographical context and more historical information on forced migration year by year since 1975. It was designed by Ekene Ijeoma and the team at Hyperakt.