- Frontline: The U.S. Immigration Detention Boom
This map of the growth of immigrant detention facilities is a great—and alarming—illustration of the rise of these ever-larger, often private facilities.
- Wikipedia: Northwest Angle
Insufficient understanding of North American geography in the late 1700s resulted in the Treaty of Paris accidentally assigning a notch of land in Canada to the United States. These 600 square miles comprise the "Northwest Angle" in Minnesota, the northernmost point in the continental U.S. To get there, one must fly, drive through Canada, or take a boat across the Lake of the Woods. 152 people live there.
- Search State and Federal Campaign Contribution Data
All of your bulk downloads for government data in one place, courtesy of the Sunlight Foundation. There's even a 2.2GB download of all state and federal campaign contributions (ever?).