New research suggests Earth was once a purple planet. Early microbes used retinal, not chlorophyll, for photosynthesis.

Traditionally, paved roads and pedestrian walkways have been illuminated by streetlights emitting a bright white, orange, or yellow glow. The aim is visibility, not aesthetics, and rarely will ...

Wild violets burst open in early spring and exhibit varying shades of white to deep purple. I have always eagerly awaited this moment, I love using wild violets in recipes in my kitchen!

“No boundaries.” Described as “dramatically provocative and thoughtful”, Ultra Violet is a deep purple shade that Pantone says communicates “originality, ingenuity and visionary thinking ...