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Credits:
Narrator/Writer: Stephanie Sammann
Writer: Ashleen Knutsen
Editor: Dylan Hennessy (https://www.behance.net/dylanhennessy1)
Illustrator/Animator: Kirtan Patel (https://kpatart.com/illustrations)
Animator: Mike Ridolfi (https://www.moboxgraphics.com/)
Sound: Graham Haerther (https://haerther.net)
Thumbnail: Simon Buckmaster (https://twitter.com/forgottentowel)
Producer: Brian McManus (https://www.youtube.com/c/realengineering)

Imagery courtesy of Getty Images

Music:

the-city-of-hope by Borrtex
The-5th-season
league---instrumental-version by michael-shynes
honey by trooper
closer by ian-post
circularity by brianna-tam
chapter-two by brianna-tam
beyond by ian-post


References:

[1] https://www.researchgate.net/p....ublication/317271906
[2] https://globalnews.ca/news/541....1935/narluga-skull-s
[3] https://www.sciencedirect.com/....topics/earth-and-pla
[4] https://www.khanacademy.org/sc....ience/ap-biology/nat
[5] https://academic.oup.com/jhere....d/article-abstract/6
[6] https://phys.org/news/2018-04-....genome-donkey-reveal
[7] https://www.pnas.org/content/107/11/5053.full
[8] https://nsidc.org/cryosphere/sotc/sea_ice.html
[9] https://esajournals.onlinelibr....ary.wiley.com/doi/fu
[10] https://www.the-scientist.com/....notebook/the-narluga
[11] https://onlinelibrary.wiley.co....m/doi/abs/10.1111/j.
[12] https://www.quantamagazine.org..../new-hybrid-species-
[13] https://www.scientificamerican.....com/article/the-ext
[14]