115: LIVE - Eyevolution III & Fat Bear Week

It's our first ever LIVE SHOW!!! We return to the threequel of eyevolution to look at... eyelids? How interesting could that be? And Caroline teaches us about the competition, the science, and the adorable bears of fat bear week!
Images we talk about:
(Also available at letslearneverything.com/115)
Tom's Topic Reveal Slide (letslearneverything.com/115/reveyenge.png)
Special Guest (letslearneverything.com/115/sabrina.png)
Seal (letslearneverything.com/115/seal.png)
Bear 480: Otis 1 (letslearneverything.com/115/otis1.png)
Bear 480: Otis 2 (letslearneverything.com/115/otis2.png)
Bear 480: Otis Comparison (letslearneverything.com/115/otis3.png)
Bear 132 Cub 1 (letslearneverything.com/115/cub1.png)
Bear 132 Cub 2 (letslearneverything.com/115/cub2.png)
Bear Bracket (letslearneverything.com/115/bracket.png)
Bear 89 Backpack 1 (letslearneverything.com/115/backpack1.png)
Bear 89 Backpack 2 (letslearneverything.com/115/backpack2.png)
Bear 89 Backpack 3 (letslearneverything.com/115/backpack3.png)
Bear 747 Bear Force One 1 (letslearneverything.com/115/bfo1.png)
Bear 747 Bear Force One 2 (letslearneverything.com/115/bfo2.png)
Timestamps:
(00:00:00) Intro
(00:06:51) Eyevolution III
(00:28:06) Fat Bear Week
(00:52:01) Outro
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We also learn about:
Sources:
The origin of blinking in both mudskippers and tetrapods (pnas.org/doi/10.1073/pnas.2220404120)
Southwest Eye Institue Blinking and Eye Health (southwesteye.com/blog/blinking-and-eye-health)
Review of Opthamology on Blinking and Tears (reviewofophthalmology.com/article/3500-years-o…)
Review of Lacrimal Gland from Journal of Opthamology (pmc.ncbi.nlm.nih.gov/articles/PMC4793137)
Advances in Clinical Chemistry: Chapter on Tear Film (sciencedirect.com/topics/medicine-and-dentistr…)
Alaska Department of Fish and Game on Seal Tear Ducts (adfg.alaska.gov/index.cfm?adfg=harborseal.prin…)
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Four Paws: Torpor vs Hibernation (four-paws.org/campaigns-topics/topics/help-for…)
North American Bear Centre: Bear Activity and Hibernation (bear.org/bear-facts/5-stages-of-activity-and-h…)
Four Paws: The Brown Bear: Way of Life & Offspring (four-paws.org/campaigns-topics/topics/help-for…)
Explore: Bear of Fat Bear Week (explore.org/meet-the-bears#h_13906987851516929…)
DOI: Everything You Want to Know About Katmai National Park’s Fat Bears (doi.gov/blog/everything-you-want-know-about-ka…)
Explore: FBW 2026 (explore.org/fat-bear-week)
BBC: 'Backpack' declared Alaska's Fat Bear Week winner (bbc.co.uk/news/articles/ck8d3vl9mj13o)
Wiki: Fat Bear Week (en.wikipedia.org/wiki/Fat_Bear_Week)
National Park Service: Bears of Katmai (nps.gov/katm/learn/nature/bears-of-katmai.htm)
Explore: FBW Hall of Champions (explore.org/hall-of-champions)
Guardian: Backpack Wins Fat Bear Week (theguardian.com/us-news/2026/sep/30/backpack-w…)
PBS: Gentle Giant Backpack Declared Winner of Alaska's Fat Bear Week (pbs.org/newshour/nation/gentle-giant-backpack-…)
Friends of Bridger Teton: When You Have to Eat All Day – Hyperphagia (btfriends.org/when-you-have-to-eat-all-day-hyp…)
FWS: Fat Bear Diet Plan (fws.gov/story/fat-bear-diet-plan)
National Park Service: FBW Past and Present (nps.gov/katm/learn/nature/fat-bear-week-past-a…)
Wiki: Hibernation (en.wikipedia.org/wiki/Hibernation)

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