A doctor was deployed to an Arctic research station during the Cold War. Decades later, he learned its secret purpose

The “city under the ice” revealed a hidden chapter of the Cold War era and gave rise to a new field of scientific inquiry. As ice melt accelerates, its story isn’t over yet.

​ The “city under the ice” revealed a hidden chapter of the Cold War era and gave rise to a new field of scientific inquiry. As ice melt accelerates, its story isn’t over yet. Read More Breaking News, Latest News and Videos | CNN