Cartography has always shaped worldview and geopolitics, and often for the worse. So it does in the era of Donald Trump.

Greenland has gained more than 1,600 kilometers (1,000 miles) of new coastline—not due to tectonic uplift, land reclamation, ...

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 ...