In many parts of the world, people are enjoying long summer days. But few know that the Earth is spinning faster than usual. This faster spin has made some recent days the shortest since modern clocks ...

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 ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." If you're not a regular at your local spin class, chances are you'll still have some preconceptions about ...

A spinning basketball hurtles from the top of a dam, turning a simple ball into a high-speed physics experiment. As it falls, ...

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 ...

"It would be amazing if a simple rotation of the universe was the origin of dark energy." What is dark energy? Why does dark energy seem to be weakening? Is our universe part of a larger multiverse?