IN AN ideal world, we’d all have hours of screen-free time before bed for a better night’s sleep. But with late-night deadlines, the constant pull of TikTok, Netflix binging, and our ...

It’s everywhere. At your 9-to-5 job, on the train, in the bathroom, even in your bed as you’re trying to fall asleep. If you’re reading this, it’s right in your face — blue light. Ever since we’ve ...

Editor’s note: The views expressed in this commentary are solely those of the writer. CNN is showcasing the work of The Conversation, a collaboration between journalists and academics to provide news ...