DoomsdayClock_black_12mins_regmark.jpg

12 minutes to midnight
1963

IT IS 12 MINUTES TO MIDNIGHT

DoomsdayClock_black_12mins_regmark.jpg

12 minutes to midnight

After a decade of almost non-stop nuclear tests, the United States and Soviet Union sign the Partial Test Ban Treaty, which ends all atmospheric nuclear testing. While it does not outlaw underground testing, the treaty represents progress in at least slowing the arms race. It also signals awareness among the Soviets and United States that they need to work together to prevent nuclear annihilation.