If you're trying to get better sleep, you might have seen sunrise alarm clocks for sale, but do they actually work? Here's ...

Circadian rhythms are your body’s built-in 24-hour clock that keeps everything running smoothly, and this clock is heavily ...

"So if you want to avoid light having a strong effect on your body clock, dim and blue would be the way to go." Conversely, bright white or yellow light was better for staying awake and alert.

The super blue moon sets behind the Balmoral Clock in Edinburgh ... Onlookers saw not only the full moon, but also a bright light close to its disk. Saturn, the “ringed planet,” is just ...