If you’ve ever heard someone say a meeting is at 1630 and then felt your brain do a small cartwheel, you have met the 24-hour clock. In the United States, we mostly live by the 12-hour clock, with a.m ...

INDIANAPOLIS -- It's known nationwide for rolling back prices. Now Wal-Mart is rolling back something else: its hours. At select locations in markets across the United States, the nation's largest ...

Splicing together footage from more than 12,000 films, Christian Marclay’s cinematic masterpiece might be the most complex clock ever built. (It’s definitely one of the most mesmerizing.) It’s high ...