A new study confirms that Earth's inner core has been rotating more slowly than usual since 2010. This mysterious "backtracking" could also end up slightly altering the planet's overall rotation, ...

Add Yahoo as a preferred source to see more of our stories on Google. You're unlikely to miss the 1.25 milliseconds that will make Aug. 5 one of the shortest days ever. Earth's rotation is randomly ...

Earth is spinning faster this summer, making the days marginally shorter and attracting the attention of scientists and timekeepers. July 10 was the shortest day of the year so far, lasting 1.36 ...

Does it feel like there's not enough time in the day for everything? Well, that could be because some upcoming days are actually getting shorter. In fact, today might just be the shortest day you'll ...

Researchers carried out a pioneering experiment where they measured the effect of the rotation of Earth on quantum entangled photons. The work represents a significant achievement that pushes the ...

"The current rapid rise in day length can thus be attributed primarily to human influences," said professor Benedikt Soja.

If you’re the kind of person who gets a lot done, you’re grateful for every one of the 86,400 seconds that make up a day. On July 9, however, as well as on July 22, and August 5, you won’t get your ...

Earth's changing spin is threatening to toy with our sense of time, clocks and computerized society in an unprecedented way — but only for a second. For the first time in history, world timekeepers ...