For the past six years, the Danish-Icelandic artist Olafur Eliasson has been working with a color chemist to produce paint pigments that correspond to each nanometer of the visible light spectrum.

YouTube is shaking things up with a colorful new experiment. Imagine opening your YouTube app and being greeted not just by the usual mix of videos but by streams of content curated by color. That’s ...

Jars for your rainbow experiment. The walking rainbow experiment starts with six jars — three filled with primary-colored water and three empty. Water walks up the paper towel and down into the empty ...