Donald Trump has been calling for America to take over Greenland, which the Danish PM has rejected. Here is what we know.

Centuries of flawed maps have led to a misconception about Greenland's size, which is nowhere near as big as it looks on the familiar flat world map. It's certainly not a small island: It's about ...

But in the Oval Office on Thursday afternoon, Donald Trump repeated his intention to eliminate Canada from the map and occupy Greenland with the same casualness that one might order lunch.