The U.S. Mint pressed its last pennies as rising metal and production costs threaten nickels, prompting shortages and debate ...

Discover how reading a quantum clock can surprisingly cost more energy than keeping it ticking, impacting timekeeping and ...

As the calendar turns to November, so, too, will our clocks turn back to standard time as daylight saving (not savings) time comes to an end. Several states were hoping to avoid the second seasonal ...

(CNN) — No, I did not prepare for the end of Daylight Saving Time this past weekend, when most US states set clocks back an hour. Sunrise and sunset now come an hour earlier, despite my protestations.

Editor’s Note: This story has been updated to include nine states that have passed permanent daylight saving time legislation that were unintentionally omitted. We ...