One country has more time zones than any other country in the world, and we'll give you a hint - it's not the U.S., and it's ...

The return to standard time — when we “fall back” — happens at 2 a.m. Sunday, Nov. 2, marking the end of daylight saving time ...

Thanks to a speed-up of Earth's rotation, the length of the astronomical day and the length of the clock day aren't quite ...

Time dilation means two observers may experience the same events years apart, revealing there is no universal “now.” ...

Two and a half decades of construction and maintenance may have cost a quarter of a trillion dollars. by Jeffrey Kluger by Olivia B. Waxman by Charlotte Hu The day's top headlines, curated by How fake ...

With the peak for autumnal colors just around the corner, check out five of the Bay Area’s best spots to get the most out of ...

A bridge constructed in Lincoln Park for sightseeing during the turn of the century soon became known as a place for death.