You Can’t Argue With the Numbers, 7-12

http://numbrary.com/
Numbrary® is a free online service dedicated to finding, using, and sharing numbers. It includes economic indicators about inflation, employment, wages, manufacturing, etc. This site has a good set of links to statistics of all kinds, including material from the U.S. Census Bureau, the Bureau of Labor Statistics, The World Factbook, and more. Find data on topics such as global warming, inflation, employment, corporate debt, and many other current issues. While you can't argue with the numbers, your students can certainly use them to argue.