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- 3587 - Coley's Toxins and the Origins of Immunotherapy
William B. Coley started using a bacterial infection to treat cancers in the late 19th century, one of the earliest uses of immunotherapy.
Wed, 16 Sep 2026 - 3586 - Philippe Pinel
Pinel’s work is considered the precursor to psychiatry. In the late 18th century, he overhauled the asylum system of Paris with his groundbreaking ideas about mental health.
Mon, 14 Sep 2026 - 3585 - SYMHC Classics: Flexner Report
This 2020 episode covers the Flexner Report, which is often credited with changing the medical field and shaping what medical education looks like today. But this document negatively impacted medicine in the Black community.
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Sat, 12 Sep 2026 - 3584 - Behind the Scenes Minis: Paddles and The British Museum
Tracy and Holly talk about corporal punishment in schools and student loans. Tracy relays her experience at the British Museum.
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Fri, 11 Sep 2026 - 3583 - Ashurbanipal
Ashurbanipal was the ruler of the Assyrian empire in the 7th century BCE. His 38-year reign was marked by both scholarship and a terrifying brutality.
Wed, 09 Sep 2026 - 3582 - Six Impossible Episodes: Back-to-Court
This episode takes a quick look at six U.S. Supreme Court cases that all have to do with the rights of children in public primary and secondary schools.
Mon, 07 Sep 2026 - 3581 - SYMHC Classics: Olympe de Gouges
This 2021 episode covers Olympe de Gouges, known primarily for her 1791 pamphlet “Declaration of the Rights of Woman and the Citizen.” But her writing and political activity went far beyond that one pamphlet.
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Sat, 05 Sep 2026 - 3580 - Behind the Scenes Minis: Percy Theories
Holly shares additional details of Percy Fawcett's life, including theories about his interest in spiritualism leading him to some odd conclusions.
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Fri, 04 Sep 2026 - 3579 - Percy Fawcett, Manuscript 512, and a Lost City in the Amazon, Pt. 2
The second part of Percy Fawcett's story delves into his fascination with a document known as Manuscript 512 and how it impacted his life. His obsession led to his disappearance; there has been endless speculation about what exactly happened.
Wed, 02 Sep 2026 - 3578 - Percy Fawcett, Manuscript 512, and a Lost City in the Amazon, Pt. 1
Fawcett’s life has invited controversy and speculation, because he was a man who did a mix of great and shady things. Part one covers his early life, marriage, military service, and early visits to South America.
Mon, 31 Aug 2026 - 3577 - SYMHC Classics: Swill Milk
This 2021 episode covers a period of time when the milk supply in New York was anything but appetizing and wholesome – it was often deadly. But efforts to address the problem were blocked by corrupt officials.
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Sat, 29 Aug 2026 - 3576 - Behind the Scenes Minis: Mary, Beulah, Baby Alive
Tracy shares a story of looking for an article in the wrong historical journal. Holly reads a section of the U.S. flag code, and waxes rhapsodic about toys.
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Fri, 28 Aug 2026 - 3575 - Beulah Louise Henry
Beulah was such a prolific inventor in the early 20th century that the press nicknamed her Lady Edison. She was an outlier as an unmarried woman who got her foot in the door as an inventor by pounding the pavement in 1920s New York.
Wed, 26 Aug 2026 - 3574 - Mary Mallon & Typhoid Revisited
Mary Mallon became known as Typhoid Mary in the early 20th century. She has often been vilified in in modern references, though her story is actually quite complex.
Mon, 24 Aug 2026 - 3573 - SYMHC Classics: Astronaut Origins of Food Safety
This 2022 episode examines the development of a systematic approach to food safety, which didn’t happen until the 20th century. And it's tied directly to NASA trying to make sure astronauts didn’t get food poisoning in space.
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Sat, 22 Aug 2026 - 3572 - Behind the Scenes Minis: Morocco and Bavaria
Tracy and Holly talk about their time visiting Chefchaouen during their Morocco trip. Holly shares her belief that secret societies don't work very well.
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Fri, 21 Aug 2026 - 3571 - Adam Weishaupt and the Bavarian Illuminati
The reality of the Bavarian Illuminati is much less dramatic than conspiracy theories would indicate. It wasn’t a mystical organization, but a protest organization formed by a rather conceited man who was frustrated with the Catholic church.
Wed, 19 Aug 2026 - 3570 - Sayyida al-Hurra, Moroccan Queen
A lot of European accounts of Sayyida al-Hurra’s life characterize her as a pirate, but that really isn't accurate. She was a a leader of a city-state and a queen of a sultanate.
Mon, 17 Aug 2026 - 3569 - SYMHC Classics: Jethro Tull
This 2021 episode covers Jethro Tull. Today, most people only know that as the name of a band, but Tull was an 18th-century gentleman farmer often credited with inventing the seed drill.
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Sat, 15 Aug 2026 - 3568 - Behind the Scenes Minis: Smashing Linoleum
Tracy talks about papers about history written by economists. Holy talks about linoleum having a bad reputation because of the designs of the 1970s and '80s.
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Fri, 14 Aug 2026 - 3567 - Frederick Walton and the Invention of Linoleum
Frederick Walton caused a lot of financial family friction on the way to developing linoleum. And even though he believed he had revolutionized home dec, he didn't expect to be remembered.
Wed, 12 Aug 2026 - 3566 - Swing Riots
The Swing Riots took place in eastern and southern England in the years between the Luddite uprising and the Rebecca Riots. One of the hallmarks of the riots was the destruction of threshing machines – but that’s just part of the story.
Mon, 10 Aug 2026 - 3565 - SYMHC Classics: Battle of Amiens
This 2018 episode covers the Battle of Amiens, near the end of World War I. It was the start of what came to be known as the 100 Days Offensive, which was the Allies’ final push to win the war.
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Sat, 08 Aug 2026 - 3564 - Behind the Scenes Minis: Air Conditioned Rabble Rouser
Tracy and Holly talk about experiences in intensely hot weather. Holly shares how moved she was by Samuel Plimsoll’s obituaries.
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Fri, 07 Aug 2026 - 3563 - Samuel Plimsoll, the ‘Sailors’ Friend’
Samuel Plimsoll was an advocate for better working conditions for sailors, and for a lot of other things. A lot of contemporary accounts refer to him as an agitator.
Wed, 05 Aug 2026 - 3562 - Three Historic Heatwaves
Heat waves don’t get as much attention as blizzards, floods, and hurricanes, but extreme heat is one of the deadliest weather events on average.
Mon, 03 Aug 2026 - 3561 - SYMHC Classics: Libertalia
This 2018 episode covers Libertalia, which, in truth, may be completely fictional. It's called a pirate settlement, though the man who spearheaded it claimed he wasn't actually a pirate.
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Sat, 01 Aug 2026 - 3560 - Behind the Scenes Minis: Pirate Evolution
Tracy shares the topics she considered for the recording in the Bahamas but decided against. Holly talks about her admiration for Thomas Huxley.
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Fri, 31 Jul 2026 - 3559 - Thomas Henry Huxley
Huxley is an example of having a good attitude about publicly acknowledging errors and learning from them. He earned the nickname “Darwin’s bulldog” for his very vocal support of Darwin’s work, and he wanted to promote science and education, particularly to people that didn’t normally have access to those things.
Wed, 29 Jul 2026 - 3558 - The Flying Gang
For part of its history, Nassau was a notorious hotbed of pirate activity. And it was home to a maritime criminal network known as the Flying Gang.
Mon, 27 Jul 2026 - 3557 - SYMHC Classics: Scarlet fever
This 2023 episode covers scarlet fever, which is treatable with antibiotics. But in the middle of the 19th century, it was the leading cause of death in children in parts of the world, and today, there are several ongoing mysteries about the disease.
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Sat, 25 Jul 2026 - 3556 - Behind the Scenes Minis: Problematized
Tracy shares her irritation with word use in a recent government report. There is also discussion of strangers visiting manor houses.
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Fri, 24 Jul 2026 - 3555 - Unearthed! In July 2026, Part 2
The wrap up of things unearthed in the second quarter of 2026 includes the potpourri category, lots of books and letters, shipwrecks, and neanderthals.
Wed, 22 Jul 2026 - 3554 - Unearthed! In July 2026, Part 1
Part one of the mid-year coverage of things literally and figuratively unearthed in the last quarter includes updates, more updates, animals, edibles and potables, and accidental finds.
Mon, 20 Jul 2026 - 3553 - SYMHC Classics: Raincoats
This 2023 episode covers how humans have worked on ways to make garments water resistant almost since they started to wear them. But figuring out how to manufacture a raincoat using rubber was a big breakthrough that took centuries.
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Sat, 18 Jul 2026 - 3552 - Behind the Scenes Minis: Shoes, Shoes, Shoes!
Holly and Tracy discuss how frustrating Charles Goodyear could be. Then Holly talks a lot about shoes and how much she loves them.
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Fri, 17 Jul 2026 - 3551 - Running Through Sneaker History
The evolution from leather-soled shoes of the 19th century to the sneakers people wear today started slowly, then built momentum. Many of the big names in sneakers today got their start surprisingly early in the process.
Wed, 15 Jul 2026 - 3550 - Charles Goodyear and Vulcanized Rubber
Charles Goodyear's work is important to so many things we have in the 21st century. But his life and his work to create a stable rubber was full of problems -- many of them caused by Goodyear himself.
Mon, 13 Jul 2026 - 3549 - SYMHC Classics: Penicillin
This 2022 episode covers the development of penicillin, which started – but definitely did not end – with the chance discovery of some mold in a petri dish.
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Sat, 11 Jul 2026 - 3548 - Behind the Scenes Minis: Dorothy Everywhere
Tracy shares stories of her time in London. There is also a discussion of Dorothy Crowfoot Hodgkin’s marriage.
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Fri, 10 Jul 2026 - 3547 - Dorothy Crowfoot Hodgkin’s Crystalline Chemistry, Part 2
After earning her first-class degree in chemistry from Oxford, Dorothy embarked on an impressive career in the new field of X-ray crystallography. She would ultimately earn many, many accolades for her work.
Wed, 08 Jul 2026 - 3546 - Dorothy Crowfoot Hodgkin’s Crystalline Chemistry, Part 1
Dorothy Hodgkin's career in X-ray crystallography impacted a lot of science in the 10th century. Part one of her story covers her early life and formative experiences that led her to her field of research.
Mon, 06 Jul 2026 - 3545 - SYMHC Classics: Sarah Bradlee Fulton
This 2023 episode covers Sarah Bradlee Fulton, sometimes called the Mother of the Boston Tea Party. But available information about her is basically a series of anecdotes, and can’t really be corroborated.
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Sat, 04 Jul 2026 - 3544 - Behind the Scenes Minis: Stairs and Trains
Tracy talks about her visit to the Bunker Hill monument. She then describes a very early morning start when she went to visit Oxford on her recent trip to England.
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Fri, 03 Jul 2026 - 3543 - Elizabeth Blackwell's Curious Herbal
Elizabeth Blackwell was born in London in the early 18th century, and was known in her lifetime for her achievements as a botanical illustrator.
Wed, 01 Jul 2026 - 3542 - The Many Meanings of the Bunker Hill Monument
Very soon after it was completed in 1842, the Bunker Hill monument started to be about a lot more than just the battle that took place on June 17, 1775.
Mon, 29 Jun 2026 - 3541 - SYMHC Classics: Four Paperclippers
This 2021 episode talks about several specialists – most with some involvement with the Nazi party – who entered the U.S. and became citizens through Operation Paperclip.
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Sat, 27 Jun 2026 - 3540 - Behind the Scenes Minis: Pacts and Facts
Holly talks about the agreement known as the Pact of the Catacombs and recent developments related to it. There's then discussion of Daguerre's Legion of Honor medal.
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Fri, 26 Jun 2026 - 3539 - Louis Le Prince, the Missing Inventor of Motion Pictures
On September 16, 1890, Louis Le Prince vanished. He was never seen or heard from again. While that is the most well-known thing about him, he had a whole life before that which involved some very intriguing things.
Wed, 24 Jun 2026 - 3538 - Catacombs of Rome
The story of the Roman catacombs is vastly different than that of the catacombs of Paris, as Rome’s are much older and were created for very different reasons.
Mon, 22 Jun 2026 - 3537 - SYMHC Classics: Operation Paperclip
This 2021 episode covers Operation Paperclip, which was the U.S. effort to bring German scientists to work in the U.S. after World War II.
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Sat, 20 Jun 2026 - 3536 - Behind the Scenes Minis: Unexpected Information
Tracy talks about how she first became interested in Casimir Pulaski's story, and how her focus changed during research. She also talks about selecting episode topics and later learning the subject is problematic.
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Fri, 19 Jun 2026 - 3535 - Rebecca Smith Pollard, aka Kate Harrington
Rebecca Smith Pollard published a book of poems to mark the U.S. centennial in 1876, and also a novel with some questionable messages. She also developed a method to teach children to read that was ahead of its time.
Wed, 17 Jun 2026 - 3534 - The Life and Afterlife of Casimir Pulaski
Pulaski is often built up into an almost mythic figure who represents patriotism, bravery, freedom, independence, and the U.S. as a melting pot. a nation of immigrants. But there’s also a very different version of his story.
Mon, 15 Jun 2026 - 3533 - SYMHC Classics: Redpath Murders
This 2022 episode covers the 1901 discovery of Ada Maria Redpath and her son Jocelyn Clifford dead in their home. What exactly happened between the two of them is something we will likely never understand.
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Sat, 13 Jun 2026 - 3532 - Behind the Scenes Minis: Piece of Work
Holly and Tracy talk about how frequently the U.S. Post Office has stopped criminals, and about E. Virgil Neal using his intellect for shady business dealings.
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Fri, 12 Jun 2026 - 3531 - E. Virgil Neal: Hypnotist, Fraudster, Tycoon, Part 2
In the early 20th century, Neal's company Force of Life was investigated for fraud. But somehow, Neal managed to get through the scandal and went on to found a cosmetics company that became very successful.
Wed, 10 Jun 2026 - 3530 - E. Virgil Neal: Hypnotist, Fraudster, Tycoon - Part 1
E. Virgil Neal’s career started out with writing successful textbooks, but then took a turn into being a stage hypnotist and then a series of dicey mail-order businesses.
Mon, 08 Jun 2026 - 3529 - SYMHC Classics: Mancini Sisters
This 2022 episode covers Hortense and Marie Mancini, who tried to make a place for themselves in 17th-century Europe, defying all kinds of conventions along the way.
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Sat, 06 Jun 2026 - 3528 - Behind the Scenes Minis: The Apostrophe and the Rich Guy
Tracy talks about a book that she didn't use for research on Viola Roseboro'. Holly talks about how wealth inequality has shaped science history.
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Fri, 05 Jun 2026 - 3527 - Robert Boyle
Boyle is frequently described at the first modern chemist, but his work encompassed much more than that. Among other things, he was a founding member of the Royal Society.
Wed, 03 Jun 2026 - 3526 - The Literary Life of Viola Roseboro'
Viola Roseboro’ isn’t well-known today, but she played a big behind-the-scenes role in the careers of a lot of American writers in the late 19th and early 20th centuries, shaping what’s thought of as the American literary canon.
Mon, 01 Jun 2026 - 3525 - SYMHC Classics: Vanport Flood
This 2016 episode covers the May 30, 1948 flood that destroyed Vanport, Oregon. What really makes the story more than a historical footnote is how it ties into the racial makeup of both Portland and Oregon at the time.
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Sat, 30 May 2026 - 3524 - Behind the Scenes Minis: Disease Pact
Tracy talks about a strange statement in a paper she read while working on the Carlos J. Finlay episode. Holly shares her amusement at the pact Hartlib and his friends made.
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Fri, 29 May 2026 - 3523 - Samuel Hartlib and the Hartlib Circle
Samuel Hartlib doesn’t exactly spring to mind when thinking about influential figures of the 17th century. But he served as a sort of conduit for information and connections among them as he sought to promote his ideas regarding theology and education.
Wed, 27 May 2026 - 3522 - Carlos Juan Finlay and Yellow Fever
Carlos Juan Finlay was a Cuban doctor who did a lot of work to understand the spread of Yellow Fever. But Walter Reed got most of the credit.
Mon, 25 May 2026 - 3521 - SYMHC Classics: Deborah Sampson
This 2022 episode covers Deborah Sampson, who could count William Bradford and Myles Standish in her family tree. That tree didn’t include Robert Shurtliff; that was the alias Deborah used to enlist in the Continental Army.
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Sat, 23 May 2026 - 3520 - Behind the Scenes Minis: Art and Theme Parks
Holly shares a quote from Daniela Lippi about the importance of ongoing learning in the restoration profession. There is then discussion of the nerve-racking construction of Disneyland.
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Fri, 22 May 2026 - 3519 - Interview: Leslie Iwerks
Disneyland's opening seemed like an impossibility throughout the construction process. Holly interviews filmmaker Leslie Iwerks about her new film "Disneyland Handcrafted," which shares the journey from an empty dirt lot to the theme park we know today.
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Wed, 20 May 2026 - 3518 - Uffizi: A Painting, A Bombing, A Restoration
In 1993, the Uffizi Gallery in Florence, Italy was damaged by a car bomb. But this story starts in the 16th century with painter Bartolomeo Manfredi, and reaches all the way to the 2000s with an extraordinary restoration project.
Mon, 18 May 2026 - 3517 - SYMHC Classics: Regulator War
This 2019 episode covers the Regulator War, aka the War of the Regulation, aka the Regulator Movement. It was a North Carolina event which arose in response to unfair taxes, poor representation and corruption.
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Sat, 16 May 2026 - 3516 - Behind the Scenes Minis: Bad Laws, Bad Cats
Tracy shares why Bhagat Singh Thind rocketed to the top of her topics list. Holly shares a story of bad cat behavior.
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Fri, 15 May 2026 - 3515 - Carrington Event
The Carrington Event was a massive geomagnetic storm that happened in 1859. It led to expanded understanding of solar phenomena.
Wed, 13 May 2026 - 3514 - United States v. Bhagat Singh ThindMon, 11 May 2026
- 3513 - SYMHC Classics: Insular Cases
This 2023 episode covers the Insular Cases, which are SCOTUS cases regarding rights of people in U.S. territories.
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Sat, 09 May 2026 - 3512 - Behind the Scenes Minis: Friends and Bubble Guns
Holly talks about how small the circle of London intellectuals was in John Graunt's time. Then there is discussion of disco balls in bathrooms.
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Fri, 08 May 2026 - 3511 - Modern Inventions That Are Actually Old
There are so many things in our modern world that we presume are fairly recent inventions. But the three things we’re going to talk about in this instance are quite old, but they have close associations with the recent past.
Wed, 06 May 2026 - 3510 - John Graunt
John Graunt was a shopkeeper in 17th-century London who followed his own curiosity to a rather grand result. His work gave rise to the fields of demography and epidemiology.
Mon, 04 May 2026 - 3509 - SYMHC Classics: Red Summer 1919
This 2019 episode marked 100 years since a wave of racist violence in the U.S. that became known as Red Summer. In many ways, Red Summer was a response to (but NOT caused by) two earlier events: the Great Migration and the return of black soldiers who had fought in World War I.
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Sat, 02 May 2026 - 3508 - Behind the Scenes Minis: Greetings and Context
Holly and Tracy commiserate about sending greeting cards. Tracy talks about how she shifted away from an episode exclusively about Frances Thompson.
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Fri, 01 May 2026 - 3507 - The Memphis Massacre
The Memphis Massacre was a truly horrific wave of destruction and violence, including sexual violence, against the Black community of Memphis just a year after the end of the U.S. Civil War.
Wed, 29 Apr 2026 - 3506 - Greeting Cards
Humans have been exchanging tokens of friendship since before recorded history. From calling cards to Valentines to Christmas cards, the modern greeting card industry evolved.
Mon, 27 Apr 2026 - 3505 - SYMHC Classics: The Color Blue
This 2019 episode covers the color blue, the most popular color in many parts of the world. But many ancient languages didn’t have a word for blue, and some languages still don’t.
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Sat, 25 Apr 2026 - 3504 - Behind the Scenes Minis: Dicey Sources
Tracy shares struggles that she encountered pulling together this edition of Unearthed. She and Holly have a tangential discussion about AI.
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Fri, 24 Apr 2026 - 3503 - Unearthed! In Spring 2026, Part 2
Part one of this quarter's edition of Unearthed! includes animals, artwork, edibles and potables, shipwrecks, potpourri.
Research:
Abdallah, Hannah. “Analysis of charred food in pot reveals that prehistoric Europeans had surprisingly complex cuisines.” EurekAlert. 3/4/2025. https://www.eurekalert.org/news-releases/1117763 Almeroth-Williams, Thomas. “British redcoat’s lost memoir reveals harsh realities of life as a disabled veteran.” EurekAlert. 1/14/2026. https://www.eurekalert.org/news-releases/1111595 Anderson, Sonja. “Does This Skeleton Found Beneath a Dutch Church Belong to D’Artagnan, the Man Who Inspired ‘The Three Musketeers’?” Smithsonian. 3/27/2026. https://www.smithsonianmag.com/smart-news/this-skeleton-found-beneath-the-floor-of-a-dutch-church-may-belong-to-dartagnan-the-fourth-musketeer-180988448/ Anderson, Sonja. “Historians Thought This Rare Renaissance Portrait by One of the First Famous Female Artists Was Lost to History—Until It Surfaced in North Carolina.” 2/3/2026. https://www.smithsonianmag.com/smart-news/historians-thought-this-rare-renaissance-portrait-by-one-of-the-first-famous-female-artists-was-lost-to-history-until-it-surfaced-in-north-carolina-180988120/ Anderson, Sonja. “Hundreds of Ancient Roman Blade Sharpeners Emerge From a Riverbank in England, Revealing the Ruins of a 2,000-Year-Old Whetstone Factory.” Smithsonian. 1/20/2026. https://www.smithsonianmag.com/smart-news/hundreds-of-ancient-roman-blade-sharpeners-emerge-from-a-riverbank-in-england-revealing-the-ruins-of-a-2000-year-old-whetstone-factory-180988016/ Anderson, Sonja. “The Italian Government Just Paid Nearly $35 Million for a Rare Caravaggio Portrait—One of the Most Expensive Artworks It’s Ever Acquired.” Smithsonian. 3/16/2026. https://www.smithsonianmag.com/smart-news/the-italian-government-just-paid-nearly-35-million-for-a-rare-Caravaggio-portrait-one-of-the-most-expensive-artworks-its-ever-acquired-180988344/ Arnold, Paul. “Poop as medicine? A Roman vial's chemistry backs up ancient medical texts.” Phys.org. 2/4/2026. https://phys.org/news/2026-02-poop-medicine-roman-vial-chemistry.html Arnold, Paul. “Scents of the afterlife: Identifying embalming recipes by 'sniffing' the air around Egyptian mummies.” Phys.org. 2/5/2026. https://phys.org/news/2026-02-scents-afterlife-embalming-recipes-sniffing.html#google_vignette Bacon, Jordan. “English history’s biggest march is a myth – King Harold sailed to the Battle of Hastings.” EurekAlert. 3/20/2026. https://www.eurekalert.org/news-releases/1120082 Bastola, Kunjal. “A Groundskeeper Noticed a Sinkhole on a Golf Course. It Turned Out to Be a Wine Cellar Full of Empty Bottles, Untouched for More Than 100 Years.” Smithsonian. 3/19/2026. https://www.smithsonianmag.com/smart-news/a-groundskeeper-noticed-a-sinkhole-on-a-golf-course-it-turned-out-to-be-a-wine-cellar-full-of-empty-bottles-untouched-for-more-than-100-years-180988379/ Bastola, Kunjal. “A Little Boy’s Library Book Was Due in 1989. Thirty-Six Years Later, He Realized His Parents Had Never Returned It.” Smithsonian. 1/26/2026. https://www.smithsonianmag.com/smart-news/a-little-boys-library-book-was-due-in-1989-thirty-six-years-later-he-realized-his-parents-had-never-returned-it-180988046/ Baum, Stephanie. “Ancient parrot DNA reveals sophisticated, long-distance animal trade network pre-dating the Inca Empire.” 3/10/2026. https://phys.org/news/2026-03-ancient-parrot-dna-reveals-sophisticated.html Baum, Stephanie. “From the Late Bronze Age to today, the Old Irish Goat carries 3,000 years of Irish history.” 2/26/2026. https://phys.org/news/2026-02-late-bronze-age-today-irish.html Benzine, Vittoria. “What Did Pompeii Smell Like? A New Study Analyzes Its Ancient Incense.” Artnet. 3/31/2026. https://news.artnet.com/art-world/pompeii-ritual-incense-study-2760240 Brooks, James. “Danish warship sunk by Nelson’s British fleet discovered after 225 years.” Associated Press. 4/2/2026. https://apnews.com/article/denmark-archaeologists-warship-nelson-copenhagen-dannebroge-lynetteholm-4519533d9e774a490f6020e893634e09 Carvajal, Guillermo. “Archaeologists achieve a historic milestone by dating French cave paintings with carbon-14 for the first time.” 3/10/2025. https://www.labrujulaverde.com/en/2026/03/archaeologists-achieve-a-historic-milestone-by-dating-french-cave-paintings-with-carbon-14-for-the-first-time/ Clayworth, Liv. “Bird poop powered the rise of the Chincha Kingdom, archaeologists find.” EurekAlert. 2/11/2026. https://www.eurekalert.org/news-releases/1115214 “Lost page of the Archimedes Palimpsest identified in Blois, central France.” Phys.org. 3/9/2026. https://phys.org/news/2026-03-lost-page-archimedes-palimpsest-blois.html Ehrlich, Claudia. “Signs on Stone Age objects: Precursor to written language dates back 40,000 years.” EurekAlert. 2/23/2026. https://www.eurekalert.org/news-releases/1117179 Ferrer, Isabel. “Is d’Artagnan lying beneath a church in Maastricht? DNA will determine if remains found are those of the famous musketeer.” El Pais. 3/25/2025. https://english.elpais.com/international/2026-03-25/is-dartagnan-lying-beneath-a-church-in-maastricht-dna-will-determine-if-remains-found-are-that-of-the-famous-musketeer.html?outputType=amp Gebauer, Kathryn. “Groundbreaking discovery reveals Africa’s oldest cremation pyre and complex ritual practices.” EurekAlert. 1/1/2016. https://www.eurekalert.org/news-releases/1111191 Harley, Sadie. “Iron Age dental plaque reveals Scythians consumed milk from horses and ruminants.” Phys.org. 1/21/2026. https://phys.org/news/2026-01-iron-age-dental-plaque-reveals.html He, Ye. “Singapore’s first ancient shipwreck reveals record cargo of Yuan dynasty blue-and-white porcelain.” EurekAlert. 2/12/2026. https://www.eurekalert.org/news-releases/1116512 Johansen, Rikke Tørnsø. “Archaeologists reveal a medieval super ship: "It's the World’s largest cog".” Vikingeskibs Museet. 12/22/2025. https://www.vikingeskibsmuseet.dk/en/news/archaeologists-reveal-a-medieval-super-ship-its-the-worlds-largest-cog Kasal, Krystal. “Hannibal's famous war elephants: Single bone in Spain offers first direct evidence.” Phys.org. 2/5/2026. https://phys.org/news/2026-02-hannibal-famous-war-elephants-bone.html Kasal, Krystal. “Oldest known sewn hide and other artifacts from Oregon caves shed light on early clothing in harsh climates.” Phys.org. 2/10/2026. https://phys.org/news/2026-02-oldest-sewn-artifacts-oregon-caves.html Killgrove, Kristina. “Romans used human feces as medicine 1,900 years ago — and used thyme to mask the smell.” 1/29/2026. https://www.livescience.com/archaeology/romans/romans-used-human-feces-as-medicine-1-900-years-ago-and-used-thyme-to-mask-the-smell Killgrove, Kristina. “Stone Age woman was buried like a man, revealing flexible gender roles 7,000 years ago in Hungary.” LiveScience. 3/3/2026. https://www.livescience.com/archaeology/stone-age-woman-was-buried-like-a-man-revealing-flexible-gender-roles-7-000-years-ago-in-hungary Koc University. “Earliest evidence of indigo-dyed textiles and single-needle knitting discovered in Bronze Age Anatolia.” Phys.org. 2/21/2026. https://phys.org/news/2026-02-earliest-evidence-indigo-dyed-textiles.html Kuta, Sarah. “Did Neanderthals Use Birch Bark Tar as an Antibiotic to Treat Wounds and Infections?” Smithsonian. 3/30/2026. https://www.smithsonianmag.com/smart-news/did-neanderthals-use-birch-bark-tar-as-an-antibiotic-to-treat-wounds-and-infections-180988393/ Kuta, Sarah. “Ostrich Eggshells Suggest Our Ancestors May Have Understood Basic Geometry 60,000 Years Ago.” Smithsonian. 3/9/2026. https://www.smithsonianmag.com/smart-news/these-intricately-decorated-ostrich-eggshells-suggest-our-ancestors-may-have-understood-basic-geometry-60000-years-ago-180988315/ Kuta, Sarah. “Ötzi the Iceman May Have Carried a Cancer-Causing Strain of HPV, a Common Virus Still Plaguing Humans Today.” Smithsonian. 1/20/2026. https://www.smithsonianmag.com/smart-news/otzi-the-iceman-may-have-carried-a-cancer-causing-strain-of-hpv-a-common-virus-still-plaguing-humans-today-180988024/ Kuta, Sarah. “Shipwreck Timbers Appeared on a Beach After a Storm. They Had Been Buried Beneath the Sand Since the 17th Century.” Smithsonian. 3/2/2026. https://www.smithsonianmag.com/smart-news/shipwreck-timbers-appeared-on-a-beach-after-a-storm-they-had-been-buried-beneath-the-sand-since-the-17th-century-180988260/ Lawson-Tancred, Jo. “Salvador Dalí’s Largest Work Snapped Up by Florida Museum.” Artnet. 3/27/2026. https://news.artnet.com/market/salvador-dali-largest-work-bonhams-sale-2749246 Lock, Lisa. “Ancient DNA finds 15,800-year-old dogs in Anatolia, buried like humans.” Phys.org. 3/28/2026. https://phys.org/news/2026-03-ancient-dna-year-dogs-anatolia.html Lock, Lisa. “Are one in 200 men really related to Genghis Khan? Maybe not, according to a new study.” Phys.org. 2/21/2026. https://phys.org/news/2026-02-men-genghis-khan.html Lucibella, Michael. “Prehistoric tool made from elephant bone is the oldest discovered in Europe.” EurekAlert. 1/26/2026. https://www.eurekalert.org/news-releases/1113140 Luscombe, Richard. “Mass grave in Jordan sheds new light on world’s earliest recorded pandemic.” The Guardian. 1/31/2026. https://www.theguardian.com/science/2026/jan/31/plague-of-justinian-pandemic net. “Did King Harold Sail to Hastings? New Study Sparks Debate Among Historians.” 3/2026. https://www.medievalists.net/2026/03/did-king-harold-sail-to-hastings-new-study-sparks-debate-among-historians/ net. “Viking-Age Woman Buried with Her Dog in Norway.” 3/2026. https://www.medievalists.net/2026/03/viking-age-woman-buried-with-her-dog-in-norway/ Newcastle University Press Office. “5,300-year-old ‘bow drill’ rewrites story of ancient Egyptian tools.” 2/9/2026. https://www.ncl.ac.uk/press/articles/latest/2026/02/ancientegyptiandrillbit/ Noraz, R., Chauvey, L., Wagner, S. et al. Ancient DNA reveals 4000 years of grapevine diversity, viticulture and clonal propagation in France. Nat Commun 17, 2494 (2026). https://doi.org/10.1038/s41467-026-70166-z Nordin, Gunilla. “World’s oldest arrow poison – 60,000-year-old traces reveal early advanced hunting techniques.” 1/7/2026. https://www.eurekalert.org/news-releases/1111624 Parco Archaeologico de Ercolano. “Archaeology: New precious decorations discovered at Villa Sora in the Herculaneum Park.” 2/5/2026. https://ercolano.cultura.gov.it/archaeology-new-precious-decorations-discovered-at-villa-sora-in-the-herculaneum-park/?lang=en Paul, Andrew. “Hiker finds 3,000-year-old bull sculpture in Spain.” Popular Science. 3/17/2026. https://www.popsci.com/science/hiker-finds-bronze-age-bull-spain/ Potter, Lisa. “A wild potato that changed the story of agriculture in the American Southwest.” EurekAlert. 1/21/2026. https://www.eurekalert.org/news-releases/1113056 “Digital scans unveil new love notes and sketches on ancient Pompeii wall.” 1/19/2026. https://www.reuters.com/science/digital-scans-unveil-new-love-notes-sketches-ancient-pompeii-wall-2026-01-19/ Richard L. Rosencrance et al. ,Complex perishable technologies from the North American Great Basin reveal specialized Late Pleistocene adaptations. Sci. Adv. 12, eaec2916(2026).DOI:10.1126/sciadv.aec2916 Ruse, Amy. “Tasmanian tiger lives on in Arnhem Land rock art.” EurekAlert. 3/30/2026. https://www.eurekalert.org/news-releases/1121955 Ruse, Amy. “World’s oldest rock art holds clues to early human migration to Australia.” EurekAlert. 1/21/2026. https://www.eurekalert.org/news-releases/1112900 Siehoff, Jonas. “Hygienic conditions in Pompeii's early baths were poor.” 1/12/2026. https://www.eurekalert.org/news-releases/1112403 Taçon, P. S. C., A.Jalandoni, S. K.May, J.Nganjmirra, and C.Mungulda. 2026. “The Devil Is in the Detail: Tasmanian Devil and Tasmanian Tiger Paintings From Awunbarna and Injalak Hill, Northern Territory, Australia.” Archaeology in Oceania. https://doi.org/10.1002/arco.70024 The History Blog. “$40 estate sale find by early African-American silversmith sells for $24,000.” 2/4/2026. https://www.thehistoryblog.com/archives/75294 The History Blog. “43,000 ostraca found at one site shed light on social history of Egypt.” 5/15/2026. https://www.thehistoryblog.com/archives/75609 The History Blog. “British Museum acquires Tudor Heart.” 2/10/2026. https://www.thehistoryblog.com/archives/75343 The History Blog. “Exceptional Roman cargo shipwreck found in Lake Neuchâtel.” 3/29/2026. https://www.thehistoryblog.com/archives/75705 The History Blog. “Extraordinary find: 10th c. bronze wheel cross matches mold found 43 years ago.” 1/24/2026. https://www.thehistoryblog.com/archives/75220 The History Blog. “Previously unknown Hans Baldung Grien portrait emerges after 500 years in the sitter’s family.” 1/17/2026. https://www.thehistoryblog.com/archives/75161 The History Blog. “Roman wooden writing tablets from Belgium deciphered.” 1/22/2206. https://www.thehistoryblog.com/archives/75207 Thomas, Laura. “A century-old Stonehenge mystery may finally be solved.” Science Daily. 1/27/2026. https://www.sciencedaily.com/releases/2026/01/260127010208.htm Thorsberg, Christian. “The National Gallery of Art Acquires 17th-Century Masterpiece by Baroque Painter Artemisia Gentileschi.” Smithsonian. 2/7/2026. https://www.smithsonianmag.com/smart-news/the-national-gallery-of-art-acquired-17th-century-masterpiece-by-baroque-painter-artemisia-gentileschi-180988147/ Thorsberg, Christian. “This Luxury Steamer Disappeared on a Stormy Night in 1872. Nearly 150 Years Later to the Day, It Was Found at the Bottom of Lake Michigan.” Smithsonian. 2/18/2026. https://www.smithsonianmag.com/smart-news/this-luxury-steamer-disappeared-on-a-stormy-night-in-1872-nearly-150-years-to-the-day-it-was-found-in-the-bottom-of-lake-michigan-180988204/ Unibo Magazine. “Humanity’s oldest geometries, engraved on ostrich eggs.” https://magazine.unibo.it/en/articles/humanitys-oldest-geometries-engraved-on-ostrich-eggs University of Tübingen. “Earliest hand-held wooden tools found in Greece date back 430,000 years.” Phys.org. 1/1/2026. https://phys.org/news/2026-01-earliest-held-wooden-tools-greece.html Villotte, S., T.Szeniczey, S.Kacki, and A.Anders. 2026. “Fixed and Fluid: The Two Faces of Gender Roles—A Combined Study of Activity Patterns and Burial Practices in the European Neolithic.” American Journal of Biological Anthropology189, no. 2: e70217. https://doi.org/10.1002/ajpa.70217. Whiddington, Richard. “3,300-Year-Old Papyrus Reveals How Ancient Egyptians Fixed Drawing Mistakes.” ArtNet. 3/9/2026. https://news.artnet.com/art-world/ancient-egyptian-papyrus-white-out-fluid-2752125 Whiddington, Richard. “Long-Lost Archimedes Text Resurfaces in French Museum.” Artnet. 3/11/2026. https://news.artnet.com/art-world/lost-page-of-archimedes-palimpsest-found-2753005 Whiddington, Richard. “Lost Parthenon Piece Unearthed From Lord Elgin’s Shipwreck.” ArtNet. 3/19/2026. https://news.artnet.com/art-world/parthenon-fragment-lord-elgin-shipwreck-2755894 Zeilsgtra, Andrew. “Breathing in the past: How museums can use biomolecular archaeology to bring ancient scents to life.” EurekAlert. 2/5/2026. https://www.eurekalert.org/news-releases/1114918 Zinin, Andrew. “600-year-old pinot noir grape found in medieval French toilet.” Phys.org. 3/24/2026. https://phys.org/news/2026-03-year-pinot-noir-grape-medieval.html#google_vignetteSee omnystudio.com/listener for privacy information.
Wed, 22 Apr 2026 - 3502 - Unearthed! In Spring 2026, Part 1
Part one of this quarter's edition of Unearthed! features updates, medical things, books and letters, oldest known things, and smells.
Mon, 20 Apr 2026 - 3501 - SYMHC Classics: Gustave Courbet
This 2022 episode covers how Courbet was iconic even in his own lifetime. He flew in the face of artistic convention, ushered in a new movement of Realism in France, and became embroiled in the country’s political turmoil.
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Sat, 18 Apr 2026 - 3500 - Behind the Scenes Minis: Oh, Kropotkin!
Tracy shares her intentions to cover Peter Kropotkin years ago, and also unpacks some of the positive and negative aspects of his life.
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Fri, 17 Apr 2026 - 3499 - Peter Kropotkin's Mutual Aid, Part 2
After returning to Russia, Kropotkin was captured and imprisoned. But his life took many turns from there, and in 1902 he published his book book “Mutual Aid: A Factor of Evolution.”
Wed, 15 Apr 2026 - 3498 - Peter Kropotkin's Mutual Aid, Part 1
Peter Kropotkin was incredibly influential in the development of anarchism in the 19th and early 20th centuries. Part one of this subject focuses on the formative moments in his early life that contributed to his becoming an anarchist communist.
Mon, 13 Apr 2026 - 3497 - SYMHC Classics: Haymarket Riot
This 2021 episode examines the Haymarket Riot, one of the many interconnected events and people and movements that are all integral to defining the basic idea of what a full-time job is in the U.S.
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Sat, 11 Apr 2026 - 3496 - Behind the Scenes Minis: Serving Lip and Ethics
Holly talks about Gladys Bentley's gender presentation, and the trouble with Maceo Sheffield. She and Tracy also discuss James Braid's ethics in both medicine and hypnotism.
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Fri, 10 Apr 2026 - 3495 - James Braid, Surgeon and Father of Hypnotism
Braid is known for his work in hypnotism. But he was also a surgeon with a reputation for pioneering new treatments before he became fascinated with the scientific underpinnings of mesmerism.
Wed, 08 Apr 2026 - 3494 - Gladys Bentley
Gladys Bentley was a part of the Harlem Renaissance as a performer – she played piano and sang in ways that drew huge crowds starting in the 1920s, and she was completely out as a lesbian. But her story takes some surprising turns.
Mon, 06 Apr 2026 - 3493 - SYMHC Classics: Moms Mabley
This 2022 episode covers Moms Mabley, whose career lasted more than six decades. She was hugely influential, and inspired so manycomedians and other performers who came after her.
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Sat, 04 Apr 2026 - 3492 - Behind the Scenes Minis: Self-talk Hoax
Holly and Tracy discuss the idea of autosuggestion and positive self-talk. Tracy shares her thoughts on writings about the Pompey stone.
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Fri, 03 Apr 2026 - 3491 - The Pompey Stone Hoax
The Pompey Stone was discovered in the early 1820s, and was believed to be hundreds of years old. It turned out to be a hoax, but a fairly benign one.
Wed, 01 Apr 2026 - 3490 - Émile Coué and Autosuggestion
Émile Coué genuinely seems to have wanted to help people by teaching them how to plant helpful directives in their subconscious minds. Whether he was effective is something that's still debated.
Mon, 30 Mar 2026 - 3489 - SYMHC Classics: Louis Daguerre
This 2021 episode covers Louis Daguerre, who comes up almost any time we mention photography. Well before he figured out how to capture images through a camera obscura, he was an artist and innovator in entertainment.
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Sat, 28 Mar 2026 - 3488 - Behind the Scenes Minis: Atlanta and Textiles
Holly talks about the frustration of not finding any solid evidence of where Richard Peters stood on the issue of slavery. Tracy wonders what Elizabeth Fulhame's relationship with her husband was like.
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Fri, 27 Mar 2026
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