Lawrence Krauss, theoretical physicist, chair of the Bulletin of the Atomic Scientists Board of Sponsors, left, and Thomas Pickering, co-chair of the International Crisis Group, display the Doomsday Clock in Washington, Thursday, Jan. 26, 2017. (AP Photo/Carolyn Kaster)
The December 1991 issue of …See the original posting at The history of the Doomsday Clock as it moves closer to ‘midnight’