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Most accurate optical atomic clock ever made will redefine the meaning of a 'second'
Scientists developed a highly accurate optical ion clock, improving time measurement precision by 1,000 times.
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The Doomsday Clock reveals how close humanity may be to total annihilation
"How accurate is the clock?Though the clock can't measure threats ... On Tuesday, the clock was set at 89 seconds to midnight — the closest the world has ever been to that marker, according ...
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Doomsday clock ticks closer: hHumanity now 89 seconds away
The Doomsday Clock indicates only 89 seconds to midnight, according to which we have never been so close to self-destruction.