There's been lots of ballyhoo about the US Population having reached 300 million this past week. Here is a pretty cool interactive map from MSNBC's web site. There's a timeline on the bottom so you can see population change through history and lots of info when you scroll around the states. I had trouble with this in Internet Exploder but it worked great in the Netscape/Firefox world. Happy mapping!
This map was done as part of a study of food choices around University City High School in Philadelphia. The map lets you choose categories of food and recreational opportunities in an attempt to advocate for better opportunities to make healthy choices in an inner city neighborhood.