It's a mad, mobile world. Learn all about people on the move at this site created by the Migration Policy Institute, an independent, nonprofit think tank in Washington, D.C., dedicated to the study of the movement of people worldwide. Want to know how the percentage of foreign-born residents in France changes from year to year? At the site, you can quickly generate a chart of those who hail from countries ranging from Azerbaijan to Uzbekistan. The Country Profiles section currently offers overviews of vital data, immigration policies, history and political debates for 10 countries. The U.S. in Focus area offers articles on issues such as post-9/11 immigration and security as well as immigrant welfare eligibility.