Wonder is everywhere. That’s why, every other week, Atlas Obscura drags you down some of the rabbit holes we encounter as we search for our unusual stories. We highlight surprising finds, great writing, and inspiring stories from some of our favorite publications. The U.S. Tried to Build a Secret City Under Greenland’s Ice by George Bass, Washington Post In the late 1950s, in the midst of the Cold War, the U.S. Army launched Project Iceworm, a top-secret plan to turn the Greenland ice sheet into a launch pad for nuclear…