White noise might be the most famous sleep sound, but it’s not the only one. This week, Hari and Dr. Priyanka explore the world of noise colors, including white, pink, brown, blue, and green noise. They break down how different sound frequencies affect the brain, what the research says about sleep, focus, ADHD, and tinnitus, and why some people find certain sounds calming while others can’t stand them. Plus, Priyanka shares the story of a rare ear condition that temporarily affected her hearing and changed the way she thinks about sound.