You might say it’s just a pigment of your imagination ...

Physicists and vision scientists are lining up behind a provocative claim: the rich color we call purple is not a property of light at all, but a story the brain tells itself. Light in the real world ...

Breakthroughs, discoveries, and DIY tips sent six days a week. Terms of Service and Privacy Policy. Excerpted from The Universe in 100 Colors: Weird and Wondrous ...