The Dancing Plague of 1518 Was Real and Hundreds of People Danced Until They Died

 In July of 1518 a woman named Frau Troffea stepped into a street in Strasbourg, which is now part of France, and began to dance.

She danced for days. She did not stop.

Within a week thirty four more people had joined her. Within a month the number had grown to around four hundred. People were dancing in the streets of Strasbourg and could not stop. They danced until they collapsed from exhaustion. Some of them danced until they died from heart attacks, strokes, or sheer physical breakdown.

This is not a legend. It is a documented historical event recorded in physician notes, cathedral records, and city council minutes from 1518.

What Actually Happened

Nobody fully knows. That is what makes this one of the strangest events in recorded history.

Historians have proposed several explanations.

Mass psychogenic illness, sometimes called mass hysteria, is one of the leading theories. This is a real documented phenomenon where physical symptoms spread through a group of people through psychological mechanisms rather than physical infection. Under conditions of extreme stress, people can begin experiencing involuntary physical symptoms that spread to others through a kind of social contagion.

Strasbourg in 1518 was experiencing severe hardship. Famine, disease, and social breakdown were common. The people of the city were under enormous psychological pressure. Some historians believe the dancing was an involuntary physical response to that collective stress.

Another theory involves ergot poisoning. Ergot is a fungus that grows on grain and produces compounds related to LSD. People who eat bread made from ergot contaminated grain can experience hallucinations, convulsions, and involuntary movements. A bad harvest season could have contaminated the grain supply.

The local authorities made things worse. They decided that the cure for the dancing was more dancing. They hired musicians and built a stage to encourage the afflicted to dance it out. That approach did not help.

Why This Story Matters

The Dancing Plague of 1518 is important not just because it is strange but because it shows something real about the relationship between extreme social conditions and human behavior.

Mass psychogenic illness is not just a medieval phenomenon. It has been documented in modern times as well. Groups of people under extreme stress can develop shared physical symptoms that have no direct physical cause. Schools, factories, and communities have experienced outbreaks of symptoms that spread through groups in ways that look like physical illness but are driven by psychological and social factors.

Understanding the Dancing Plague gives us a window into how desperate the conditions were for ordinary people in early sixteenth century Strasbourg. It also gives us an early documented example of a phenomenon that researchers still study today.

It is also just one of the most genuinely bizarre things that has ever happened. And it is completely real. And almost nobody learns about it.

Robert Lee Beers III is a writer and digital preservation advocate based in North Charleston South Carolina.

The Year 536 AD Was the Worst Year in Human History and Almost Nobody Knows About It

 Historians and scientists who study this period say that 536 AD was probably the worst year in human history to be alive.

Not a year of war. Not a year of plague. A year when the sky itself went dark.

What Happened in 536 AD

In early 536 AD a mysterious fog rolled in across Europe, the Middle East, and parts of Asia. It did not lift for eighteen months.

The fog blocked enough sunlight that temperatures across the Northern Hemisphere dropped significantly. Europe experienced the coldest decade in the past 2300 years. Summer temperatures fell by one and a half to two and a half degrees Celsius.

That does not sound like much. But it was enough to devastate agriculture across the entire region.

Crops failed. Snow fell in China during summer. Droughts hit Peru. Famine spread across vast areas of the world. People who survived the immediate food crisis faced years of starvation and social collapse.

The Chinese chronicler of the time wrote that the sun was bluish and gave little light. Other records from across the affected regions describe darkness, famine, and death on a massive scale.

What Caused It

Scientists now believe a massive volcanic eruption caused the fog. A volcano in Iceland is currently the leading candidate based on ice core evidence. The eruption would have thrown enough ash and sulfur into the upper atmosphere to block sunlight across much of the Northern Hemisphere for an extended period.

This kind of event is called a volcanic winter. It has happened multiple times in human history. The 1815 eruption of Mount Tambora in Indonesia caused what became known as the Year Without a Summer in 1816, which devastated harvests across North America and Europe and contributed to one of the worst famines of the nineteenth century.

The 536 event appears to have been worse. Much worse.

The effects did not end in 537. The disruption to climate patterns and food production contributed to conditions that made the Plague of Justinian, which killed tens of millions of people across the Roman Empire and beyond starting in 541, even more devastating than it would otherwise have been. Weakened and starving populations are more vulnerable to disease.

Why This Is Not Taught

Part of the reason this event is not widely known is that the records from that era are limited and scattered across multiple cultures and languages. Pulling together the full picture required both historical research and scientific analysis of ice cores, tree rings, and other physical evidence.

Part of it is also that the dark ages, roughly the period following the fall of the Western Roman Empire, tend to get less attention in standard history curricula than the periods before and after.

But this event shaped the history of an entire era. The famine and disease that followed the volcanic winter of 536 to 541 helped accelerate the collapse of the late Roman world and contributed to the conditions that defined the medieval period that followed.

Understanding it gives you a much richer picture of why that period of history looked the way it did.

History is not just about what people decided. It is about what the world threw at people and how they survived it. The year 536 is one of the most dramatic examples of that in the historical record. And almost nobody knows it happened.

Robert Lee Beers III is a writer and digital preservation advocate based in North Charleston South Carolina.

Hedy Lamarr Was a Hollywood Star Who Invented the Technology That Became WiFi and Bluetooth

 Your WiFi. Your Bluetooth. Your GPS. The wireless communication technology that runs almost everything in your life right now.

A Hollywood actress invented the foundational concept behind all of it in 1942. Her name was Hedy Lamarr. And almost nobody knows who she was.

Who Hedy Lamarr Was

Hedy Lamarr was an Austrian-American actress who was one of the biggest film stars in Hollywood during the 1940s. She was also an inventor who taught herself engineering and spent her free time working on technical problems.

During World War Two she became concerned about the vulnerability of radio-guided torpedoes to signal jamming by the enemy. If an enemy could jam the frequency controlling a torpedo they could redirect it or neutralize it entirely.

She developed a solution. Working with composer George Antheil she invented a system called frequency hopping spread spectrum. The idea was that a signal could rapidly hop between different frequencies in a coordinated pattern that would be almost impossible to jam because an enemy would not know which frequency to block.

She and Antheil patented the invention in 1942 and donated the patent to the US government for use in the war effort.

What Happened to the Invention

The US Navy did not use it. They dismissed it and put it in a file.

The patent expired in 1959 before it was ever used commercially. Hedy Lamarr received nothing for it.

In the 1980s engineers working on wireless communication and spread spectrum technology developed systems that used the same basic principles she had patented decades earlier. That technology became the foundation for WiFi, Bluetooth, GPS, and most modern wireless communication.

By the time the world began to recognize what she had done she was elderly and largely forgotten as both an actress and an inventor. She received a technical honor from an electronics engineers association in 1997. She died in 2000.

She was never compensated for the technology that now underlies a multi trillion dollar global wireless communications industry.

Why History Forgot Her

The pattern is one we have seen before. A woman made a significant contribution. Men in the field did not take it seriously at the time. The patent expired. Others built on the work later without crediting the original inventor. And the history books wrote about the men who commercialized the technology rather than the woman who invented the concept.

There are hundreds of stories like Hedy Lamarr's. Women who made foundational contributions to science, technology, medicine, and engineering who were ignored, uncredited, or deliberately written out of the record.

Every time we recover one of these stories it makes the picture of history more accurate and more complete.

Your phone works because of something a Hollywood actress figured out during World War Two. That is true. And it is remarkable. And it should be in the history books.

Robert Lee Beers III is a writer and digital preservation advocate based in North Charleston South Carolina.