Part of the Nuclear Power Play: Screening & Discussion, presented with the Pulitzer Center. The Pentagon is preparing for an extensive — and expensive — modernization of the country’s half-century-old land, air, and sea-based […]

Tucked away deep in the heart of Russia, there is a hidden city where thousands of men, women and children live and work behind barbed-wire fences monitored by armed guards. […]

Carl Sagan and other Cold War scientists once feared that a nuclear war could plunge the world into a deadly ice age. Three decades later, does this theory still resonate? […]