A Cold War ghost surfaced in a NASA radar image in 2024: Camp Century, the subterranean U.S. Army base entombed beneath Greenland’s ice sheet. Scientists stumbled onto the buried base on a research flight and then stitched together the outlines of a secret project whose traces are now at the mercy of a warming Arctic. That rediscovery—a reminder of how deeply the United States is already embedded on the island—landed a year before Washington revived an even eerier idea: "owning" Greenland . In