If you haven’t seen the PBS Deep Look series, now’s your chance.

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. Structural colors create the brilliant gorget of a Hummingbird as well as the Morpho’s wing.

If no film or link appears in this email, go to the blog to view it by clicking on the blog title above.
If the film stops & starts in an annoying manner, press pause (lower left double bars ||) to let it buffer and get ahead of you.  [Chuck Almdale]