How do butterfly wings get their color?

Josh and Chuck dive into the fascinating science behind iridescence - that shimmery, color-changing effect you see on oil slicks, soap bubbles, and most spectacularly, butterfly wings. They break down the difference between regular pigmentation and the complex physics of how light waves interact with transparent, multi-layered surfaces to create those stunning rainbow effects. You'll learn why butterfly wings are so much more dazzling than a simple bubble and discover the clever evolutionary advantages of these natural light shows.