The Factbook survived the Cold War and became a hit online. It mixed quirky cultural notes and trivia with maps, data, and photos taken by CIA officers. But it was discontinued this week.

#1 New York Times Bestseller! Get thousands of facts at your fingertips with this essential resource: sports, pop culture, science and technology, U.S. history and government, world geography, ...

From ancient traditions to modern marvels, explore a diverse array of intriguing topics that will leave you amazed. Whether you're a history buff or just love learning new things, there's something ...

Ah, Earth. We may not think about our planet on a day-to-day basis, but the world we live in is a pretty interesting place. The third rock from the Sun—and to this day, the only one with known ...

Life’s a lot better when you stay curious and open-minded about the world. That’s easier said than done, however. Adult responsibilities, work, studies, chores, and stress all get in the way. But if ...