CHICAGO — A new interactive transportation map is out for the Chicago area, but it’s more than just a tool for getting around. It is designed to light a fire under civic leaders to make… ...

The map tracks several turning points in U.S. expansion, from the Louisiana Purchase in 1803 to the annexation of Texas less than 45 years later. It ends in 1959 with Congress’ admission of ...

Union membership has plummeted in the U.S., from nearly one-third of workers 50 years ago to one in 10 American workers today. Quoctrung Bui of NPR’s Planet Money created this fascinating map to ...

The map covers over 150 years of NYC transit history (though don't expect to see the Second Avenue Subway, which is a phrase you've probably heard for the last decade).

Myles Zhang, a Columbia University student, has created an animated map that chronicles the development of New York City’s street grid and infrastructure system from 1609 to present day.