Light impacts the ticking of our internal clock — it tells our brain to be awake, while darkness signals that it’s time to sleep. That’s why screen time before bed can interfere with your sleep.

Within most regions of the U.S., clocks are adjusted one hour ahead during summer months and then adjusted back an hour during the winter months. According to the U.S. Naval Observatory ...

Within most regions of the U.S., clocks are adjusted one hour ahead during summer months and then adjusted back an hour during the winter months. However, as of 2007, Daylight Saving Time in the U ...

We have trillions of body clocks — a central one in the brain and others in each cell of our body. Here's how they work with light to control our health. Exposure to light is crucial for our ...

When you purchase through links on our site, we may earn an affiliate commission. Utter the words ‘alarm clock’ to anyone born in this century, and they may look at you in undisguised ...

Research teams have innovated in nuclear clock technology by creating thin thorium tetrafluoride films, enhancing the clocks’ precision and reducing their radioactivity. This advancement promises ...

However, building such a clock has posed major challenges—thorium-229, one of the isotopes used in nuclear clocks, is rare, radioactive, and extremely costly to acquire in the substantial ...