The advantage of a radio-controlled clock that receives the time signal from WWVB is that you never have to set it again. Whether it’s a little digital job on your desk, or some big analog wall ...

Lastly, a detector counts 9,192,631,770 wave cycles of the tuned microwaves. According to NIST, the time it takes to count these cycles defines what we know as a second.

And so the earliest organisms learned to calculate time by photons. In other words, life could track both time and color before the development of eyes. Daylight and Earth’s 24-hour clock are at ...

T oday, the Doomsday Clock was set to 89 seconds to midnight, the closest to midnight ever in its 78-year history. It’s the duty of the United States, China, and Russia to lead the world back ...

The Doomsday Clock now stands at 89 seconds to midnight, the closest to catastrophe in its nearly eight-decade history. Here's a look at how — and why — it's moved.

During the Cold War in 1991, the clock was set 17 minutes from midnight—the farthest it has ever been. Conversely, 2025's setting at 89 seconds to midnight marks its closest approach.

Our writer found the best wall clocks you can buy online, including a modern white option from Muji, a not-so-obvious cuckoo clock from Rejuvenation, and more.

“When the clock is at midnight, that means there’s been some sort of nuclear exchange or catastrophic climate change that’s wiped out humanity,” Bulletin president and CEO Rachel Bronson ...

Donald Trump's former advisor Steve Bannon dropped the first clue of something big happening this weekend in his podcast ...

The second iteration of Hatch’s sunrise alarm clock, the Restore 2 offers far more than sunrises and sunsets: Users can augment their bedtime routines with colorful mood lighting (like turquoise ...

The closer the clock gets to midnight, the more precarious our situation becomes. And as of 2025, the clock is at an all-time low (or high, depending on your perspective), perched just 89 seconds ...

The Doomsday Clock is a metaphor for how close the world is to being inhabitable for humanity. Scientists just set the new time for 2025.