Thursday, September 23, 2021
Cold Thermogenesis

Invisible Polar Bears and Other Arctic Adaptations

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Writer/Narrator/Editor: Stephanie Sammann
Editor: Dylan Hennessy (
Illustrator/Animator: Kirtan Patel (
Animator: Mike Ridolfi (
Sound: Graham Haerther (
Thumbnail: Simon Buckmaster (
Producer: Brian McManus (

Imagery courtesy of Getty Images


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[10] Moalem, Sharon, and Jonathan Prince. Survival of the Sickest: The Surprising Connections Between Disease and Longevity (P.S.). Reprint, Harper Perennial, 2008.


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48 thoughts on “Invisible Polar Bears and Other Arctic Adaptations
  1. Invisible polar bear 🐻 Glacier melting day by day Wow Amazing science channel Exploring the Glacier animals Surviving of the ice condition polar bears are in extinction because human using Carbon day by day increasing it so sad human animals destroy other creatures for their selfish

  2. Can we have another video on the opposite scale perhaps in tropical or desert adaptations? It would be interesting to see how animals can stay cool as the world around them heats up.

  3. I wonder if I might have the hunters response; I’m half Native American, Haida specifically from Ketchikan Alaska and have mostly been in the cold till later in life, same with much of my family so who knows? Would be cool to think that’s the reason some of the folks are more tolerant of the cold but never knew

  4. A very fine channel indeed. I subscribed immediately after seeing the octopus video.
    Nice to hear that you're cooperating with Brian. You guys picked an wonderful name for the podcast and created the perfect logo. I'm sorry to inform you though, that he beat you to the punch in hooking me up with Nebula.

  5. Some yeara ago, Russian scientists in Siberia found a well preserved woolly mammoth frozen in the permafrost. They commented that it was so well preserved that its flesh was still edible. I thought about this. The comment begged the question 'what sort of food did the poor scientists have that they would consider eating the mammoth'.

  6. Just watched this on Nebula, but came here to give a comment as they are not supported there:

    I guess global warming will save all those animals from freezing to death 😛

  7. MESİAH *****-Until the coming of Jesus I'm your leader…I am the expected savior in the scriptures…There are 2 ways, no other..heaven and hell…I declare that you have only one yourself and your loved ones from eternal torment.. estas llevando gente al infierno .no ocultes los hechos ..Soy el ultimo estímulo.. .Jesucristo no está muerto, dijiste ¿por qué está muerto?..aprender los hechos ..mensaje del salvador..sálvate a ti mismo y a tus seres queridos del tormento eterno Jesus não está morto..a chegada dele está muito perto Иисус не умер, его прибытие очень близко..3 мировые войны и факты.сообщение спасителя Ісус Христос не помер, написано його від'їзд..3 світові війни..факти, які ви знаєте

  8. I once went outside in a swimsuit at -20F with a windchill of -50F for 5 minutes and you could very immediately and intensely feel the blood getting constricted in my extremities.

  9. Because of the robot-like narration i lost my interest and started typing this, which led me to google how you spell "narration" and from then on i fell down a wiki-rabbithole, which led me to the origin of stars on flags, althewhile this video was playing. I don't know what this video is about anymore, and i did not look up the spelling or definition of althewhile.

  10. I've heard about brown fat before, my understanding was that most mammals have at least some amount of it – though perhaps most don't have the quantity required for meaningful thermogenesis. I was wondering though: How efficient is brown fat when it comes to converting chemical energy into heat?

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