HTML5 visualisation of global migration flows
peoplemov.in
peoplemov.in
A minor point: as usual with these cases, I wonder if the selected data sources do not contradict each other, and when they do, how the choice is made.
Another point is the definition of a migrant. Perhaps it was taken from a data source, but I would like to see it explicitly stated on the site: words do not always have the same meaning for everyone.