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 ...

Add Yahoo as a preferred source to see more of our stories on Google. Something unusual is happening to our planet, and scientists are racing to understand why. For billions of years, Earth’s rotation ...

Find out what’s speeding up Earth’s rotation and why it may force timekeepers to delete a second ...

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 ...

Melting ice sheets and rising seas are redistributing enough mass across the planet to measurably slow Earth’s rotation, ...

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 ...

It wouldn’t be summer without the stretched out days. The dawns break early and the dusks come late, affording more time for lazy beach trips and long barbecues under the slow curve of the sun. But ...

The new study described this "almost unprecedented rate of increase" in the length of an average day as a quantifiable ...

Earth's rotation is randomly speeding up, and nobody is quite sure why. These speedups, which have occurred several times over the last few years, haven't had any effect on daily life, but they also ...