At a tree ring conference in the relatively treeless city of Tucson, Arizona, three scientists walk into a bar. The trio gets to talking, trying to explain a mysterious set of core samples from the Florida Keys. At some point, they come up with a harebrained idea: put the tree rings next to a seemingly unrelated dataset. Once they do, they notice something that no one has ever noticed before, a force of nature that helped shape modern human history and that is eerily similar to what’s happening on our planet right now. With help from pirates, astronomers and an 80-year-old bartender, this episode will change the way you look at the sun. (Warning: Do not look at the sun.) 
Special thanks to Scott St George, Nathaniel Millett, Michael Charles Stambaugh, Justin Maxwell, Clay Tucker, Willem Klooster, Kevin Anchukaitis
EPISODE CREDITS
Reported by - Latif Nasserwith help from - Ekedi Fausther-Keeys and Maria Paz GutierrezProduced by - Maria Paz Gutierrez and Pat Walterswith help from - Ekedi Fausther-Keeys and Sachi MulkeyOriginal music and sound design contributed by - Dylan Keefewith mixing help from - Jeremy Bloom and Arianne WackFact-checking by - Natalie Middletonand Edited by  - Pat Walters
CITATIONS:
Books: 
<a href="https://www.press.jhu.edu/books/title/12044/tree-story">Tree Story</a> (<a href="https://zpr.io/ULX279uzgW9q">https://zpr.io/ULX279uzgW9q</a>) by Valerie Trouet<a href="https://www.penguinrandomhouse.com/books/322123/sweetness-and-power-by-sidney-w-mintz/">Sweetness and Power</a> (<a href="https://zpr.io/cUEGqGGWMSaQ">https://zpr.io/cUEGqGGWMSaQ</a>) by Sidney Mintz
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