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Credits:
Narrator: Stephanie Sammann
Writer: Lorraine Boissoneault
Editor: Dylan Hennessy (https://www.behance.net/dylanhennessy1)
Illustrator/Animator: Kirtan Patel (https://kpatart.com/illustrations)
Illustrator: Elfy Chiang (https://www.elfylandstudios.com)
Animator: Mike Ridolfi (https://www.moboxgraphics.com/)
Sound: Graham Haerther (https://haerther.net)
Thumbnail: Simon Buckmaster (  / forgottentowel  )
Producer: Brian McManus (   / realengineering  )
Joke Suggester: Katie Sammann

Imagery courtesy of Getty Images

References:

[1] https://www.cia.gov/readingroom/docs/...
[2] https://journals.biologists.com/jeb/a...
[3] https://www.rpra.org/wp-content/uploa...
[4] https://en.wikipedia.org/wiki/Source_...
[5] https://cvhf.org.uk/history-hub/the-s...
[6] https://www.historic-uk.com/HistoryUK...
[7] https://www.pnas.org/doi/10.1073/pnas...
[8] https://www.jstor.org/stable/4084902
[9] https://www.nature.com/articles/natur...
[10] https://journals.biologists.com/jeb/a...
[11] https://www.nature.com/articles/s4159...
[12] https://journals.biologists.com/jeb/a...