President Trump's territorial assertions sparked a round of rethinking by mapmakers and teachers, snark on social media and sarcasm by at least one other world leader.

Mapmakers and teachers are re-thinking what to call the gulf of water between Mexico, the United States and Cuba after President Donald Trump ordered it renamed from the Gulf of Mexico to the Gulf of ...

Antarctica is not truly home to anyone, as far as we know, but between 1,000 and 10,000 hardy workers can be stationed there, depending on the season, while around 40,000 tourists come and go each ...