Waking up to a loud alarm on your smartphone is not a fun way to get up in the morning. Plus, there’s growing evidence that having a smartphone in the bedroom may be wreaking havoc on our sleep. This ...

You’d think that synchronizing the clocks across a fleet of modern servers is a solved problem, but it’s actually quite a hard challenge to solve, especially if you want to get to nanosecond accuracy.

Perhaps your cell phone does a fine job waking you up in the morning, but an alarm clock is a superior device. By now, it’s common knowledge that using your phone at bedtime—or even sleeping near it, ...