White House national security adviser H.R. McMaster believes the U.S. is inching closer to war with North Korea.

The nuclear age was triggered in Chicago 75 years ago this week. We remember that fateful day, the man behind it and the lingering implications.

The days when Americans fretted over an imminent U.S.-Soviet nuclear showdown might be over, but the consequences of a new nuclear age are still reverberating today.

Why did the Trump transition team target Department of Energy staffers who worked on climate change? What does the future hold for climate research and nuclear weapons? A one-on-one interview with the current U.S. Secretary of Energy.

The nuclear codes come up during almost every presidential election. We talk with the woman overseeing the Doomsday Clock about the president's authority over the nation's nuclear arsenal. 

Two U.S. Navy Culinary Specialists have spent their military careers cooking for hungry shipmates. But recently, they spent time in the relatively open kitchen space at the Union League Club of Chicago working with its Executive Chef, Michael Garbin. We follow them during a cooking session.

Eric Schlosser joins us to discuss his nonfiction book, Command and Control: Nuclear Weapons, the Damascus Accident and the Illusion of Safety.

North Korea is warning of a nuclear attack against the United States. We look at how realistic the threat is, and how things have escalated in the Democratic People's Republic of Korea.

Diplomacy is being put to the test in Iran. Tightened sanctions and threats of war are making the situation even more tense. We explore the details of the standoff.