What does it mean to be blue? The wings of a Morpho butterfly are some of the most brilliant structures in nature, and yet they contain no blue pigment — they harness the physics of light at the nanoscale. Learn more about these butterflies in this Deep Look video.
https://www.youtube.com/watch?v=29Ts7CsJDpg&list=PLdKlciEDdCQA1MVDuyxZPVloYV3wpunMO&index=5&t=0s
