Energy Saved, Sleep Lost: The Unintended Consequences of LED Lighting

In the early 90s, I remember dozens of Radio Shack trips with my dad. We were always making little hobby projects, and we’d refill on red, yellow and green LEDs. One day, I asked him why there were no blue LEDs for sale. My favorite color was blue, and I wanted to use it in our projects.

My Dad and I in 1988.
Pictured: Blue, red and green LED lights. PiccoloNamek on Wikimedia Commons, CC BY-SA 3.0
Via Treehugger
Credit: UK Independent
Blue-light blocking mobile screen protector via Health-E
From The Verge
Via the New York Times
TrueDark’s SleepHacking Glasses

Design advocate, speaker and author of Calm Technology. Research Fellow at Mozilla Foundation, Advisor at Puma Browser and Unlock Protocol.