You’ve probably seen every color in the rainbow—until now. Scientists say they’ve unlocked a hue the human eye was never ...

Music influences emotion, memory, and mental health, and serves as a tool for healing and joy. Explore the roots of its power and ways to incorporate more music into your life.

"Olo" is said to be a saturated blue-green or teal colour - but some say the perception of the colour is "open to argument".