Have you ever wondered what happens beneath the waves while you sleep? Coral reefs are not just static underwater gardens—they are bustling cities that never truly rest, where the rhythm of life ...

Like most armed forces across the world, the U.S. military uses the 24-hour clock. But why does military time exist, and when was it first adopted?

The onscreen action (or non-action) is synced up to the actual time, so if you see a shot onscreen of a clock tower showing 4:45 p.m., you know it's 4:45 p.m. in Minneapolis.

Earth may experience its shortest day ever, with the Moon’s position speeding up the planet’s rotation by about 1.3-1.6 milliseconds.

You can buy a 24-hour clock on Amazon right now. ... His clocks don't change time, of course, and they exist in a world that doesn't abide by a minute-to-minute mentality.

“The Clock really is a clock,” Breitweiser, the curator, told me. “Everyone is watching the time go by.” “The Clock” is on view at MOMA through January 21, 2013.

This is the first time that MoMA has hosted a 24 hour screening of "The Clock" in 12 years. Tickets to this very unhinged event are included with the $30 price of admission.