Scientific American is running a piece on how a new paper just published in Science has taken the dataset on global migrant flows by the United Nations and generated a new view of the data in an interactive chart. It is interesting to take a look and see how many people are moving from one region to another and how interconnected people are. The largest moves appear to be between regions in Sub-Saharan Africa(probably due to war and refugees), from South Asia to Western Asia, and Central America to North America.
The migration patterns are interesting by themselves, but i found much more interesting the tool used to display them http://circos.ca/ [circos.ca] quite cool graphics that I had not seen previously.
This kind of graph was used in a recent version of Time Magazine, the US edition (International editions often differ in content). I believe it was the April 1 issue.