Scientists have created a new light-activated ink that can change color on demand. It’s made up of microbeads of different colors that rise or sink in response to different wavelengths of light so ...

Squeezing the crystal changes how closely the molecules interact, which changes the color of light it emits from green at low pressure (left) to red at high pressure (right). In pCP-H (lower crystals) ...

Makeup is like magic; it’s powerful, transformative, and even mood-enhancing. And with color-changing products, those who grew up loving mood rings can have their own adult version of something that ...