The 'leap second' is no more. How a minor time adjustment became a major problem

For more than 50 years, humanity has used "leap seconds" to keep our clocks aligned with the rotation of the Earth. On Thursday, an international time-keeping body in France voted to do away with leap seconds and let the clocks slip until they're out of alignment by a full hour — meaning it could be centuries, or even millennia, before another tweak is needed.

For more than 50 years, humanity has used "leap seconds" to keep our clocks aligned with the rotation of the Earth. On Thursday, an international time-keeping body in France voted to do away with leap seconds and let the clocks slip until they're out of alignment by a full hour — meaning it could be centuries, or even millennia, before another tweak is needed.

For more than 50 years, humanity has used "leap seconds" to keep our clocks aligned with the rotation of the Earth. On Thursday, an international time-keeping body in France voted to do away with leap seconds and let the clocks slip until they're out of alignment by a full hour — meaning it could be centuries, or even millennia, before another tweak is needed.

News/World