For years, when Houstonians needed to find their way around town, they’d reach for their Key Map. The Houston Key Map, which debuted in 1957, was as arresting as it was practical: a binder-bound book ...

“All maps are lies,” my colleague, geographer David Salisbury, says. He’s right. All maps are inherently incomplete, focusing on certain subjects and areas to the exclusion of others. These are ...

The world’s population has tripled since 1950, and the number of megacities has grown from one—New York City—to more than 30, from Mexico City to Shenzhen to Hyderabad. But roughly half of the land on ...

Newly released political maps from California's redistricting commission would leave some members of Congress without a political home and others to face off against colleagues in their own party in ...