Heilprin Land as a proving ground

Competing truths were forced to confront the same, indifferent terrain, and only one survived.

An ice core segment from a large aquifer in southeast Greenland that researchers mapped using data from NASA's largest airborne survey of polar regions in history. (NASA Goddard Space Flight Center/Ludovic Brucker)

Part 5 of a five-part series on science diplomacy and sovereignty in the Arctic.

In the past century, the region of North Greenland known as H…