The Bulletin of the Atomic Scientists’ “Doomsday Clock” will remain at two minutes to midnight through 2019, the group announced yesterday. The proximity of the Clock’s hands to midnight represents the likelihood of a man-made global catastrophe. Experts cited threats of nuclear weapons and climate change in yesterday’s announcement. Since the Doomsday Clock’s advent in 1947, it has never displayed a time closer to midnight than 11:58, to which it was last set in 2018. The only other time the Doomsday Clock has suggested a situation of equal urgency was in 1953, during the Cold War. Rachel Bronson, executive director and publisher of the Bulletin of the Atomic Scientists, joins us to discuss the current risks to humanity. We also hear from WBEZ listeners who answered our online call to weigh in on the Doomsday Clock!