The Developing History of Monarch Butterflies

The Developing History of Monarch Butterflies

Monarch butterflies are still in the middle of their story – and it’s one that is precarious. Humans are still trying to figure out a lot about them, and aspects of the monarch story have been misrepresented over the years.

Research:

  • Monarch Joint Venture: https://monarchjointventure.org/
  • “Monarch Butterfly.” The National Wildlife Federation. https://www.nwf.org/Educational-Resources/Wildlife-Guide/Invertebrates/Monarch-Butterfly
  • Sutherland, Douglas W.S. and Jean Adams, ed. “The Monarch Butterfly – Our National Insect.” Part of “Insect Potpourri: Adventures in Entomology.” CRC Press. 1992.
  • Britannica, The Editors of Encyclopaedia. "Danaus". Encyclopedia Britannica, 15 Feb. 2018, https://www.britannica.com/topic/Danaus-Greek-mythology
  • Kathleen S. Murphy. “Collecting Slave Traders: James Petiver, Natural History, and the British Slave Trade.” The William and Mary Quarterly, vol. 70, no. 4, 2013, pp. 637–70. JSTOR, https://doi.org/10.5309/willmaryquar.70.4.0637
  • Müller-Wille, Staffan. "Carolus Linnaeus". Encyclopedia Britannica, 19 May. 2022, https://www.britannica.com/biography/Carolus-Linnaeus
  • Stearns, Raymond Phineas. “James Petiver: Promoter of Natural Science, c.1663-1718.” American Antiquarian Society. October 1952. https://www.americanantiquarian.org/proceedings/44807240.pdf
  • “Mark Catesby (1683 – 1749).” Catesby Commemorative Trust. 2012. https://web.archive.org/web/20130906122250/http://www.catesbytrust.org/mark-catesby/
  • Smith-Rogers, Sheryl. “Maiden of the Monarchs.” TEXAS PARKS & WILDLIFE. March 2016. https://monarchjointventure.org/images/uploads/documents/legacy_monarch_catalina_trail_article.pdf
  • Scott, Alec. “Where do you go, my lovelies?” University of Toronto Magazine. Aug. 24, 2015. https://magazine.utoronto.ca/campus/history/where-do-you-go-my-lovelies-norah-and-fred-urquhart-monarch-butterfly-migration/
  • Hannibal, Mary Ellen. “How you can help save the monarch butterfly -- and the planet.” TEDTalk. April 28, 2020. https://www.youtube.com/watch?v=wvJTbegktKc
  • Jarvis CE, Oswald PH. The collecting activities of James Cuninghame FRS on the voyage of Tuscan to China (Amoy) between 1697 and 1699. Notes Rec R Soc Lond. 2015 Jun 20;69(2):135–53. doi: 10.1098/rsnr.2014.0043.
  • “The US Endangered Species Act.” World Wildlife Federation. https://www.worldwildlife.org/pages/the-us-endangered-species-act#:~:text=Passed%20with%20bipartisan%20support%20in,a%20species%20should%20be%20protected.
  • Associated Press. “Beloved monarch butterflies are now listed as endangered.” WBEZ Chicago. July 23, 2022. https://www.wbez.org/stories/beloved-monarch-butterflies-are-now-listed-as-endangered/0f3cf69b-8376-42eb-af0a-9e8b8b4ab6b3
  • Garland, Mark S., and Andrew K. Davis. “An Examination of Monarch Butterfly (Danaus Plexippus) Autumn Migration in Coastal Virginia.” The American Midland Naturalist, vol. 147, no. 1, 2002, pp. 170–74. JSTOR, http://www.jstor.org/stable/3083045
  • “Natural History – Monarch Butterfly.” Center for Biological Diversity. https://www.biologicaldiversity.org/species/invertebrates/monarch_butterfly/natural_history.html
  • Catesby, Mark. “A Monarch butterfly, with orchids.” C. 1722-6. Royal Collection Trust. https://www.rct.uk/collection/926050/a-monarch-butterfly-with-orchids
  • Daly, Natasha. “Monarch butterflies are now an endangered species.” July 21, 2022. National Geographic. https://www.nationalgeographic.com/animals/article/monarch-butterflies-are-now-an-endangered-species
  • Walker, A., Oberhauser, K.S., Pelton, E.M., Pleasants, J.M. & Thogmartin, W.E. 2022. Danaus plexippus ssp. plexippus. The IUCN Red List of Threatened Species 2022: e.T194052138A200522253. https://dx.doi.org/10.2305/IUCN.UK.2022-1.RLTS.T194052138A200522253.en
  • Price, Michael. “Monarch miscalculation: Has a scientific error about the butterflies persisted for more than 40 years?” Science. Feb. 24, 2007. https://www.science.org/content/article/monarch-miscalculation-has-scientific-error-about-butterflies-persisted-more-40-years
  • Jiang, Kevin. “Study sheds light on evolutionary origins and the genes central to migration.” UChicago News. Oct. 6, 2014. https://news.uchicago.edu/story/genetic-secrets-monarch-butterfly-revealed
  • Borkin, Susan Sullivan. “Notes on Shifting Distribution Patterns and Survival of Immature Danaus Plexippus (Lepidoptera: Danaidae) on the Food Plant Asclepias Syriaca.” The Great Lakes Entymologist. Vol. 15, No. 3. Fall 1982. https://scholar.valpo.edu/cgi/viewcontent.cgi?article=1437&context=tgle
  • Cudmore, Rebecca. “SNAPSHOT: Monarchs with big, bright wings arrive in Mexico first.” ScienceLine. June 16, 2014. https://scienceline.org/2014/06/monarch-migration/
  • Brower, Lincoln P. “UNDERSTANDING AND MISUNDERSTANDING THE MIGRAnON OF THE MONARCH BUTTERFLY (NYMPHALIDAE) IN NORTH AMERICA: 1857-1995.” Journal of the Lepidopterists' Society. Vol. 49, No. 4, 1995. https://www.fs.fed.us/wildflowers/pollinators/Monarch_Butterfly/documents/Understanding_Monarch_Migration1995-Brower.pdf

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Jaksot(2624)

Clarence Birdseye and the Rise of Frozen Foods

Clarence Birdseye and the Rise of Frozen Foods

Before Clarence Birdseye, frozen food was perceived as being low-quality and kind of gross. But after spending time in extremely cold climates, Birdseye figured out that speed freezing was the key to retaining freshness. Research: “$1,900,000 Fraud Attempt Alleged in Insurance Deal.” St. Louis Post-Dispatch. May 2, 1917. https://www.newspapers.com/image/138253870/?match=1&terms=%22Clarence%20Birdseye%22 “Alleged Clean-up of $1,900,000 in Two Days.” The Bennington Evening Banner. May 2, 1917. https://www.newspapers.com/image/546110078/?match=1&terms=%22Clarence%20Birdseye%22 Birdseye, C. “Animal Food Product.” U.S. Patent Office. Aug. 12, 1930. https://patentimages.storage.googleapis.com/ff/f3/e3/ea3d0a5d1b6b7a/US1773080.pdf Birdseye, C. “METHOD OF PRESERVING PISCATORIAL PRODUCTS.” U.S. Patent Office. April 18, 1924. https://patentimages.storage.googleapis.com/b7/d9/5a/aeb7fae023f47e/US1511824.pdf Birdseye, Clarence, 1886-1956. Some Common Mammals of Western Montana in Relation to Agriculture and Spotted Fever, pamphlet, 1912; Washington D.C.. https://digital.library.unt.edu/ark:/67531/metadc87555/ Britannica Editors. "Clarence Birdseye". Encyclopedia Britannica, 3 Oct. 2025, https://www.britannica.com/biography/Clarence-Birdseye “Celebrating American Innovation: Clarence Birdseye.” Council for Innovation Promotion. Sept. 14, 2023. https://c4ip.org/celebrating-american-innovation-clarence-birdseye/ “Clarence Birdseye.” Lemelson-MIT. https://lemelson.mit.edu/resources/clarence-birdseye “Clarence Birdseye Is Dead at 69; Inventor of Frozen-Food Process; Developed Method for Quick Freezing and Also Devised System for Dehydrating.” New York Times. Oct. 9, 1956. https://www.nytimes.com/1956/10/09/archives/clarence-birdseye-is-dead-at-69-inventor-of-frozenfood-process.html “Frozen Food Market Size, Share & Industry Analysis, By Type (Frozen Ready Meals, Frozen Seafood & Meat Products, Frozen Snacks & Bakery Products, and Others), Distribution Channel (Supermarkets/Hypermarkets, Specialty Stores, Convenience Stores, and Online Retail), and Regional Forecast, 2025-2032.” Fortune Business Insights. Oct. 6, 2025. https://www.fortunebusinessinsights.com/frozen-food-market-10413 “How Did Clarence Birdseye Shape the American Diet?” National Inventors Hall of Fame. Nov. 28, 2022. https://www.invent.org/blog/inventors/clarence-birdseye Kile, O.M. “Food That Is Fresh Though Frozen: New Preserving Process Aims to Maintain Cell Structure.” The Baltimore Sun. Nov. 10, 1929. https://www.newspapers.com/image/373627550/?match=1&terms=%22quick-frozen%22%20 Kurlansky, Mark. “Birdseye: The Adventures of a Curious Man.” Thorndike Press. 2012. “Reinsurance for Policyholders in Defunct Concerns.” New-York Tribune. Nov. 11, 1917. https://www.newspapers.com/image/894239796/?match=1&terms=%22Clarence%20Birdseye%22 “Supervisory Methods Lax.” The Kansas workman. Nov. 1, 1917. https://www.newspapers.com/image/480092568/?match=1&terms=%22Clarence%20Birdseye%22 “Who invented frozen food?” Library of Congress. https://www.loc.gov/everyday-mysteries/technology/item/who-invented-frozen-food/ See omnystudio.com/listener for privacy information.

5 Marras 202536min

The Great Fear of 1789

The Great Fear of 1789

The Great Fear was a panic during the French Revolution that spread through rural areas. It all started with a conspiracy theory. Research: Davies, Alun. “The Origins of the French Peasant Revolution of 1789.” History, 1964, Vol. 49, No. 165 (1964). https://www.jstor.org/stable/24404527 Elster, Jon. “The Two Great Fears of 1789.” Prepared for the Conference on “Emotions and Civil War”, Collège de France June 10-11 2010. https://www.college-de-france.fr/media/jon-elster/UPL13205_LePillouerThe_two_great_fears_of_1789.pdf Hill, Henry Bertram. “An Aftermath of the Great Fear.” The Journal of Modern History, Vol. 22, No. 4 (Dec. 1950). Via JSTOR. https://www.jstor.org/stable/1875896 Kasal, Krystal. “Mapping out France's 'Great Fear of 1789' shows how misinformation spreads like a virus.” Phys.org. 8/28/2025. https://phys.org/news/2025-08-france-great-misinformation-virus.html Lefebvre, Georges. “The Great Fear of 1789; rural panic in revolutionary France.” Joan White, translator. Pantheon Books. 1973. Lenharo, Mariana. “An abiding mystery of the French Revolution is solved — by epidemiology.” Nature. 8/27/2025. doi: https://doi.org/10.1038/d41586-025-02739-9 Mark, Harrison W. “Great Fear.” World History Encyclopedia. https://www.worldhistory.org/Great_Fear/ Markoff, John. “Contexts and Forms of Rural Revolt: France in 1789.” The Journal of Conflict Resolution , Jun., 1986, Vol. 30, No. 2 (Jun., 1986), pp. Via JSTOR. https://www.jstor.org/stable/174254 Pelz, William A. “The Rise of the Third Estate: The French People Revolt.” From A People's History of Modern Europe. Pluto Press. Via JSTOR. https://www.jstor.org/stable/j.ctt1c2crfj.8 Tackett, Timothy. “Conspiracy Obsession in a Time of Revolution: French Elites and the Origins of the Terror, 1789-1792.” The American Historical Review , Jun., 2000, Vol. 105, No. 3. Via JSTOR. https://www.jstor.org/stable/2651806 Zapperi, Stefano et al. “Epidemiology models explain rumour spreading during France’s Great Fear of 1789.” Nature. 8/27/2025. https://doi.org/10.1038/s41586-025-09392-2 See omnystudio.com/listener for privacy information.

3 Marras 202540min

SYMHC Classics: Thomas-Alexandre Dumas

SYMHC Classics: Thomas-Alexandre Dumas

This 2019 episode is about general Thomas-Alexandre Dumas, who sounds like a character out of one of his son’s books. His life was a series of dramatic and daring adventures, including his rise up through the ranks of the French military.See omnystudio.com/listener for privacy information.

1 Marras 202530min

Behind the Scenes Minis: Villas and Tirades

Behind the Scenes Minis: Villas and Tirades

Holly talks about the unsubstantiated stories associated with the Villa de Vecchi in northern Italy. Tracy talks about getting angry about a passage she read in Wednesday's show. See omnystudio.com/listener for privacy information.

31 Loka 202523min

Hammersmith Ghost Murder

Hammersmith Ghost Murder

In late 1803, accounts of ghost sightings began to circulate in Hammersmith, England. This led to a tragic event, and a legal case that revealed some limitations in existing English law. Research: “The case of the murdered ghost.” BBC News. January 3, 2004. http://news.bbc.co.uk/2/hi/uk_news/england/london/3364467.stm “Fears of a Ghost and the Fatal Catastrophe.” The Morning Chronicle. Jan 5, 1804. https://www.newspapers.com/image/394016127/?match=1&terms=Francis%20Smith Feikert-Ahalt, Clare. “The Case of a Ghost Haunted England for Over Two Hundred Years.” Library of Congress Blog. In Custodia Legis. Law Librarians of Congress. Oct. 30, 2015. https://blogs.loc.gov/law/2015/10/the-case-of-a-ghost-haunted-england-for-over-two-hundred-years/ Castle, Terry. “Phantasmagoria: Spectral Technology and the Metaphorics of Modern Reverie.” Critical Inquiry. Autumn, 1988, Vol. 15, No. 1.pp. 26-61. The University of Chicago Press. https://www.jstor.org/stable/1343603 “FRANCIS SMITH. Killing; murder. 11th January 1804..” Proceedings of the Old Bailey. “The Hammersmith Ghost: London’s Paranormal Murder.” Discovery UK. Jan. 7, 2025. https://www.discoveryuk.com/mysteries/the-hammersmith-ghost-londons-paranormal-murder/ “The Hammersmith Ghost.” Cambridge Chronicle and Journal. Jan. 14, 2804. https://www.newspapers.com/image/975790052/?match=1&terms=Hammersmith%20ghost Kirby, R.S. “Kirby's Wonderful and Scientific Museum: Or, Magazine of Remarkable Characters, Volume 2.” 1804. https://books.google.com/books?id=ggMhkDz-33EC&source=gbs_navlinks_s Medland, W.M. and Charles Weobly. “A Collection of Remarkable and Interesting Criminal Trials, Actions at Law, &c: To which is Prefixed, an Essay on Reprieve and Pardon, and Biographical Sketches of John Lord Eldon, and Mr. Mingay, Volume 2.” Badcock. January 1804. Accessed online: https://play.google.com/store/books/details?id=c5YuAAAAYAAJ&rdid=book-c5YuAAAAYAAJ&rdot=1 Mitchell, Edwin Valentine, ed. “The Newgate calendar :comprising interesting memoirs of the most notorious characters who have been convicted of outrages on the laws of England.” Garden City Pub. Co. 1926. https://catalog.hathitrust.org/Record/006759756 “Murder – Hammersmith Ghost.” The Bury and Norwich Post. Jan. 18, 1804. https://www.newspapers.com/image/394552157/?match=1&terms=Hammersmith%20ghost “The Reath Hammersmith Ghost.: The Bath Journal. Jan. 16, 1804. https://www.newspapers.com/image/975620428/?match=1&terms=Hammersmith%20ghost “Regine v. Gladstone Williams.” Transcript of the Shorthand Notes of Marten Walsh Cherer Ltd., 36-38 Whitefriers Street,Fleet Street, London, EC4Y 8BH. Telephone Number: 01-583 7635, Shorthand Writers to the Court. https://www.bailii.org/ew/cases/EWCA/Crim/1983/4.html See omnystudio.com/listener for privacy information.

29 Loka 202533min

Villa de Vecchi

Villa de Vecchi

Today’s topic is an abandoned mansion, but it was once a gorgeous and luxurious home designed for a prominent citizen of northern Italy. It’s often described as haunted and as having a dark history, but there are some interesting contradictions regarding that story. Research: “Caravan Journal, the rediscovered manuscript. The Orient through the eyes of a forgotten Milanese patriot: Felice De Vecchi.” Arte.IT: The Map of Art in Italy. https://www.arte.it/calendario-arte/milano/mostra-giornale-di-carovana-il-manoscritto-ritrovato-l-oriente-attraverso-gli-occhi-di-un-patriota-milanese-dimenticato-felice-de-vecchi-4835 “Cesare Maria De Vecchi in Rhodes.” Palace of the Grand Master. https://grandmasterpalacerhodes.gr/cesare-maria-de-vecchi/ Claus, Patricia. “Mussolini's Old Villa on Rhodes Still on Real Estate Market.” Greek Reporter. July 17, 2020. https://greekreporter.com/2020/07/17/mussolinis-old-villa-on-rhodes-still-on-real-estate-market/ Britannica Editors. "Aleister Crowley". Encyclopedia Britannica, 11 Oct. 2025, https://www.britannica.com/biography/Aleister-Crowley Frigo, Marco. “Villa De Vecchi: the haunted mansion inhabited by ghosts not far from Milan with a mysterious, dramatic and fascinating past.” Milano Segreta. Oct. 6, 2025. https://milanosegreta.co/en/villa-de-vecchi-ghost-mansion/ Linstrom, Emily. “Villa de Vecchi.” Atlas Obscura. Lecco, Alberto, Foot, John. "Milan". Encyclopedia Britannica, 13 Oct. 2025, https://www.britannica.com/place/Milan-Italy Linstrom, Emily. “Villa de Vecchi.” Atlas Obscura. https://www.atlasobscura.com/places/villa-de-vecchi “History of Milan.” Civitatis Milan. https://www.introducingmilan.com/history Imam, Maham. “ATHENAEUM: Adaptive reuse of Villa De Vecchi into a public Library.” University of Management and Technology, Lahore. 2023. https://drive.google.com/file/d/1j3dhAHK8v4i-vV_IkAB8WXWMXpCEP_BQ/view?pli=1 Philip, Lizzie. “The Real Story Behind Northern Italy’s Abandoned ‘Ghost Mansion.’” Atlas Obscura. Oct. 17, 2018. https://www.atlasobscura.com/articles/ghost-mansion-in-northern-italy#:~:text=Place-,Villa%20de%20Vecchi,explore%20more%20Atlas%20Obscura%20videos. Pitzalis, Bruno. “Step Inside an Abandoned ‘Ghost Mansion’ of Northern Italy. Atlas Obscura. Oct. 9, 2018. https://www.youtube.com/watch?v=oTP2erZ7CBc&t=38s Santarelli, Enzo. “DE VECCHI, Cesare Maria.” Biographical Dictionary of Italians. https://www.treccani.it/enciclopedia/de-vecchi-cesare-maria_(Dizionario-Biografico)/ “Sidoli, Alessandro (1812-1855), Architekt, Maler und Graphiker.” Österreichisches Biographisches Lexikon. Austrian Center for Digital Humanities and Cultural Heritage. (Translated.) https://www.biographien.ac.at/oebl/oebl_S/Sidoli_Alessandro_1812_1855.xml Smee, Taryn. “The Red House – Italy’s Most Haunted Villa Which Lies Abandoned and Off Limits.” The Vintage News. Nov. 20, 2018. https://www.thevintagenews.com/2018/11/20/villa-de-vecchi/ “Villa De Vecchi, Italy: A Timeless Masterpiece of Architectural Splendor.” Rethinking the Future. https://www.re-thinkingthefuture.com/articles/villa-de-vecchi-italy See omnystudio.com/listener for privacy information.

27 Loka 202534min

SYMHC Classics: Aleister Crowley

SYMHC Classics: Aleister Crowley

This 2021 episode covers Aleister Crowley, a truly prolific and deliberately transgressive occultist whose practices included sex and drug use. He influenced modern Satanism, as well as other new religious movements.See omnystudio.com/listener for privacy information.

25 Loka 202540min

Behind the Scenes Minis: Ghosts and Their Towns

Behind the Scenes Minis: Ghosts and Their Towns

Holly and Tracy talk about ghost experiences in their lives. Tracy thanks all the listeners who suggested ghost towns for this week's episode.See omnystudio.com/listener for privacy information.

24 Loka 202522min

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