Geography

Have scientists been doing it wrong all along? One expert seems to think so. Here’s a look at the new way we could be measuring mountains.

What Is the Tropic of Cancer? Earth’s Imaginary Lines, Explained

If you’ve ever wondered what the Tropic of Cancer, the prime meridian, or the equator are, we explain some of the best-known imaginary lines on Earth.

Geography
The 10 Flattest U.S. States

Not all states are created equal — at least when it comes to topography. Here are the flattest states in the U.S., ranked by the difference between the highest and lowest elevation points in each state.

Geography
What Are Earth’s Biggest Seas?

While seas don’t always get the same attention as oceans do, they are just as vital to global climate, trade, and travel. From the remote reaches of North America to the calm blue depths of Southeast Asia, check out 10 of the biggest seas in the world.

Geography
Why Don’t Alaska and Louisiana Have Counties?

Ever wondered why Alaska and Louisiana don’t have counties, while the remaining 48 states do? Here's a fascinating look at the geographical histories of these unique states.

Geography