Donald Trump renamed the Gulf of Mexico. Here's what that means legally and politically, according to experts.

As President Donald Trump's whims reverberate across the world, one particular Chicago group — globe and mapmakers — rise to meet the challenge.

There are eight countries around the world that are known to have nuclear weapons, and there are fears that Iran could join ...

The number of countries in the world does not change very often, but when it does, mapmakers (and their digital counterparts) ...