Do Polar Bears Have Fiber Optic Fur?

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Humans may use fiber optic technology to make everything from novelty desk toys to high speed internet cables, but Nature has its own ideas. For decades, scientists have debated to what extent polar bears may use the optical properties of their hollow, transparent hairs to help keep themselves warm.

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Sources:
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Images:
https://commons.wikimedia.org/wiki/File:Glasfaserlampe.jpg
https://www.gettyimages.com/detail/photo/polar-bear-on-rock-in-zoo-in-summer-royalty-free-image/1424202335?phrase=polar+bear+hair&adppopup=true
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https://www.gettyimages.com/detail/illustration/fiber-optic-formation-total-internal-royalty-free-illustration/1285775710?phrase=total+internal+reflection.+&adppopup=true
https://www.gettyimages.com/detail/photo/global-connections-royalty-free-image/935028794?phrase=global+communications+network&adppopup=true
https://www.researchgate.net/figure/Polar-bear-hair-surface-structure-by-SEM-with-different-magnifications-A-1-000-B_fig2_362233650
https://www.gettyimages.com/detail/photo/close-up-on-polar-bear-royalty-free-image/1364833093?phrase=polar+bear+hair&adppopup=true
https://www.gettyimages.com/detail/photo/close-up-of-a-polarbear-royalty-free-image/594057274?phrase=polar+bear+fur&adppopup=true
https://commons.wikimedia.org/wiki/File:Polar_Bear.jpg
https://www.gettyimages.com/detail/photo/polar-bear-leaping-in-the-snow-royalty-free-image/95863200?phrase=polar+bear+in+the+sun+overcast&adppopup=true
https://www.gettyimages.com/detail/video/polar-bear-female-with-cubs-on-tundra-stock-footage/1076691794?adppopup=true
https://www.gettyimages.com/detail/photo/fibre-optic-splice-tray-royalty-free-image/1130447549?phrase=fiber+splice&adppopup=true
https://www.gettyimages.com/detail/photo/polar-bear-royalty-free-image/1473584635?phrase=polar+bear+hair&adppopup=true
https://www.eurekalert.org/news-releases/554170
https://www.eurekalert.org/multimedia/981152
https://www.gettyimages.com/detail/photo/polar-bear-bathing-and-playing-in-the-water-pool-royalty-free-image/1402820626?phrase=polar+bear+hair&adppopup=true
https://www.gettyimages.com/detail/photo/beautiful-girl-tossing-snow-against-mountains-royalty-free-image/1189926003?phrase=human+sweater+snow+outside&adppopup=true
https://www.gettyimages.com/detail/video/white-bear-cub-goes-out-from-a-lair-stock-footage/516377756?adppopup=true
https://www.gettyimages.com/detail/photo/fiber-optic-purple-light-source-abstract-background-royalty-free-image/1401167123?phrase=fiber+optics&adppopup=true