The Doomsday Clock - a barometer of nuclear danger for the past 55 years - has been moved one minute further away from the "midnight hour".
The concept timepiece, devised by the Bulletin of the Atomic Scientists (BAS) now stands at six minutes to the hour. The group said it made the decision to move the clock back because of a more 'hopeful state of world affairs'.
The clock was first featured by the magazine in 1947, shortly after the US dropped its A-bombs on Japan. The clock had been adjusted 18 times before today since its initial start at seven minutes to midnight.
Most recently, in January 2007, the clock moved to five minutes to midnight, when climate change was added to the prospect of nuclear annihilation as the greatest threats to humankind. Two years later, however, the board of the BAS says that there is now a 'growing political will' to tackle both the "terror of nuclear weapons" and 'runaway climate change'.
At a news conference in New York, the BAS board said: 'By shifting the hand back from midnight by only one additional minute, we emphasize how much needs to be accomplished, while at the same time recognizing signs of collaboration among the United States, Russia, the European Union, India, China, Brazil, and others on nuclear security and on climate stabilization.'
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