For many years, cesium atomic clocks have been reliably keeping time around the world. But the future belongs to even more accurate clocks: optical atomic clocks. In a few years' time, they could ...
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The Doomsday Clock: What actually is it & how does it work?
The Doomsday Clock has been set at 85 seconds to midnight, the closest it has ever been to midnight, according to the ...
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