Lasrick writes The ominous minute hand of the 'Doomsday Clock' has been fixed at 5 minutes to midnight for the past three years. But it could move tomorrow. The clock is a visual metaphor that was created nearly 70 years ago by The Bulletin of the Atomic Scientists, whose Board of Governors boasts 18 Nobel laureates. Each year, the Bulletin's Science and Security Board assesses threats to humanity — with special attention to nuclear warheads and climate change — to decide whether the Doomsday Clock needs an adjustment. The event will be streamed live from the Bulletin's website at 11 am EST.