LED lights are one of the most common type of lights in our lives now, but the creation of specifically blue LEDs proved to ...

The indicator lights on your Echo speaker can flash in a variety of different colors. Here’s what they’re trying to tell you.

Simple enough. But what happens when you live in a culture where green also means blue? (Before we answer that, here's why our own traffic light colors are red, yellow, and green.) That’s when ...