Inside an ICE CAVE! – Nature's Most Beautiful Blue

Published on December 7, 2017

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Step beneath this glacier in 360˚ virtual reality!

Where do glaciers and icebergs get their beautiful blue color? This unique blue might be nature’s most brilliant, and the color arises in a very special way thanks to some surprising interactions between light and water molecules. Who knew physics could be so breathtaking?

Special thanks to :

Josh Cassidy from KQED’s Deep Look ►
Above & Beyond Alaska wilderness tours:

Filmed at Mendenhall Glacier under a Special Use Permit on the Juneau Ranger District, Tongass National Forest

Absorption spectrum of water:


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It’s Okay To Be Smart is hosted by Joe Hanson, Ph.D.
Director: Joe Nicolosi
Writer: Joe Hanson
Cinematography: Josh Cassidy
Producer/editor/animator: David Schulte
Producer: Stephanie Noone and Amanda Fox

Produced by PBS Digital Studios
Music via APM
Stock images from Shutterstock

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