The length of a second could be about to change as German Scientists have found a way to create world's most accurate clock. If it had started 14 billion years ago at the Big Bang it would have lost just 100 seconds.

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The length of a second could be about to change as German Scientists have found a way to create world's most accurate clock. If it had started 14 billion years ago at the Big Bang it would have lost just 100 seconds.