When do clocks change? Daylight saving time ends at 2 a.m. on Sunday, Nov. 2, as clocks fall back one hour. It will mean most people in the U.S. and Canada gain an extra hour of sleep as standard time ...
Improvements in clocks are setting the stage for a redefinition of the second. This is an Inside Science story. (Inside Science) -- Earlier this year, in a nondescript lab at the National Institute of ...
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