There's a hidden mode in some of your devices and apps that's good for your eyes, your battery and maybe even your sanity. It's called Dark Mode, and WSJ's David Pierce explains how to turn it on everywhere you can. Photo/Video: Emily Prapuolenis/The Wall Street JournalThe first thing I do in the morning is check my phone. Our phones are bright and colorful by design, as they hope to lure us in all day, every day. But I’ve found a way to fight back that’s easier on my rods and cones, and lighter on my batteries.

Source: Wall Street Journal January 20, 2019 13:52 UTC