Matthew Bloch and Robert Gebeloff | The New York Times
Matthew Bloch and Robert Gebeloff at The New York Times have designed a wonderful choropleth map of U.S. migration data going back to 1880. The user can select the origin of various immigration groups to see how they settled across the United States. A time slider provides an easy way to animate the data, either as percent of population, or in number of residents.
Visit the site.DATE: 12/02/2011