In 2015 the world was divided into two warring factions overnight. And at the center of this schism was a single photograph. Cecilia Bleasdale took a picture of a dress that she planned to wear to her daughter's wedding and that photo went beyond viral. Some saw it as blue with black trim; others as white with gold trim. For his part, Wired science writer Adam Rogers knew there was more to the story -- a reason different people looking at the same object could come to such radically divergent conclusions about something as simple as color.

Rogers recently wrote a book titled Full Spectrum: How the Science of Color Made Us Modern. In this episode, Roman Mars talks with the author about how the pursuit to organize, understand, and create colors has been one of the driving forces shaping human history, starting with the story of this hotly debated piece of apparel from 2015 then winding back through built environments of global World's Fairs.

Full Spectrum