The steady tick of a clock usually feels simple and dependable. Something swings or vibrates in a controlled rhythm and marks ...

Picture a clock ticking so steadily that it doesn’t lose a second, even after running for 1 billion years. Scientists are now closer than ever to realizing that level of timekeeping precision, new ...

If the daily ‘rise and shine’ is a struggle, a sunrise simulator could be just what you need to wake up without the surprise jolt of your alarm clock.

Scientists say the return to "standard time" is good for our health. But the time change can be disruptive and we must also ...