Scientists have devised a method to hijack the human eye, enabling it to see brand-new colors that lie beyond the scope of natural human vision.With this technique, the researchers enabled five people to see a new color, dubbed "olo," which the study participants described as a "blue-green of unprecedented saturation." The researchers, some of whom participated in the experiment themselves, described their technique and the new color in a study published Friday (April 18) in the journal Science Advances.Get the world’s most fascinating discoveries delivered straight to your inbox.