The medieval meaning of your birthstone

Several birthstones play key roles across modern technologies

Diamonds are used in drills and quantum computing, while peridot and zircon help in steelmaking and carbon capture. Rubies, sapphires, and alexandrite enable several varieties of lasers found in medicine and advanced optics. Garnets are found in water filtration systems and radiation detectors. Sapphires are used as substrates in semiconductors.

Maya jade earflares were believed to open pathways to the divine

Carved from rare, hard-to-work jadeite, Maya earflares symbolized vitality and timelessness. Seen as living objects, they were believed to act as portals between the human and supernatural worlds, making finely crafted examples especially prized.

Diamond engagement rings didn’t become popular until the 1900s

However, the history of engagement rings stretches all the way back to the year 850, when the pope said that a ring symbolized a man’s intent to marry. At the time, gold was the most popular choice for engagement rings. See a full timeline of the engagement ring’s history.

What the stars once meant to ordinary people

The stars were a crucial aid for ordinary human beings in premodern societies, acting as regular timekeeping phenomena and celestial navigators. Today, light pollution and modern technology have rendered the stars a mere aesthetic delight for most of us, but their significance in history remains. Watch this brief video to learn how premodern humans used the stars for navigation, mathematics, and more.

Medieval bestiaries blended real animals with myth and moral lessons

Medieval bestiaries combined observed animals with fantastical creatures, using vivid imagery to convey symbolism and moral meaning. This lecture explores England’s Worksop Bestiary (c. 1185), showcasing over 100 illustrated beasts from the Morgan Library’s collection.

Six myths about the Middle Ages

The Middle Ages, or medieval era, refers to roughly 500 CE to 1,500 CE. Contemporary opinion perceives this era as "dark" or backward because it was the time between the fall of Rome and the rise of the Renaissance. But much of the era was vibrant, and many myths are just that, including the idea that most people believed the Earth was flat. Watch this video to debunk more myths.

Medieval elites prized narwhal tusks as mythical “unicorn horns”

During the Middle Ages and the Renaissance, narwhal tusks were believed to be unicorn horns, possessing healing and anti-poisonous properties. Coveted by Europe’s elites, they became royal gifts—with one even presented to Queen Elizabeth I by explorer Martin Frobisher.

A sample of quirky medieval era-book titles

The medieval book publishing industry wasn't quite so robust as our modern era's, but the mystical and satirical tomes coming out at that time still needed a name. Peruse this list of some of the quirkier of those titles, which reflects the era's literalness, theological interest, and downright silliness.

For the medievals, the moon was a versatile religious symbol

Within the distinct traditions of Christianity and Islam, the moon became a central metaphor and sign for religious teaching. For Christians, its light was used to explain Jesus' humanity with the light of the sun (divinity). For Muslims, the moon represented a cosmic longing for god.

What one seventh-century European teen might have looked like

A 16-year-old girl believed to have traveled from Central Europe to England in the seventh century was buried with rare, expensive jewelry. Her body was found in Cambridge, England in 2012, and analysis revealed what her face likely looked like. See...

The mysterious qualities of obsidian and magnetite

Obsidian is a dark volcanic glass created when lava cools quickly and frequently contains magnetite, a key early mineral used in compasses. Large deposits were discovered and used in central Mexico by the Toltecs roughly 1,000 years ago at the ancient site of Teotihuacan. This essay explores obsidian's cultural impact and the mysterious presence of magnetite in migratory birds.

The history and significance of rosemary

Rosemary is more than just an herb—it’s a powerful symbol intertwined with ancient Egypt, Christianity’s origins, Shakespeare, the culinary arts, and more. Native to the Mediterranean area, this plant has accompanied humanity for centuries, providing us with pleasant aroma, adornment, and even medicine. Explore this article for further insight into the significance of our long-standing relationship with rosemary.

The history of blood, as told by a hematologist

Since ancient times, blood has been seen as a semi-magical substance. Alchemists theorized it was a mixture of the four elements. Others proposed it was one of four bodily fluids whose balance dictated health. This 2019 essay by a hematologist reviews blood's reputation across cultures and centuries.

A medievalist explains how romantic love emerged as a cultural concept

Many long-form stories written in English were originally considered "romances," a term derived from the Old French word for "the speech of the people." But changes in medieval culture, triggered by a number of 12th-century church reforms, led to a new interest in what we now consider romantic love, including a new view of marriage as a pursuit of love rather than a transaction. Those new perspectives were then reflected in the period's popular stories, including stories in Chaucer's "Canterbury Tales."

The true power of being a medieval fool

The stereotypical image of a court jester – their jagged, jingling tunics, donkey-eared hoods, and exaggerated expressions – belies their influence and power in medieval European courts. Jesters mocked their masters and communities through performances that could include witty ripostes, musical instruments, dance, juggling, and more. This gallery offers commentary on the fool’s role and power during the Middle Ages.

Learn more about the history of fireworks, which dates back to an accidental invention during an alchemist's quest for information about immortality.

Beads are social currency during Mardi Gras

Historians believe krewes started tossing small items, colloquially called "throws," to onlookers sometime in the 1870s or 1880s. Eventually, shiny beads became the norm and were usually given to those offering something in return. (At times, that meant free booze or the flashing of breasts.) The early strings of beads were glass, though by the 1960s most were plastic.

Dreams have long been used for religious and political power

Classic literature and mythology attests to the crucial role dreams play in narratives, from the Virgin Birth to the prophetic visions of Gilgamesh and Enkidu. The heightened state of dreaming and its analog, hallucinating, have long held special power over the collective imagination.

The history of skull modification

The ancient Maya people sometimes modified their skulls to appear more conical. Body modification has been a human pastime for literal ages, from piercings to bindings and everything in between. Modifying one's skull shape may have been a way to symbolize status, beauty, belonging, or belief. The health impacts of such practices are still debated. This article explores the history and health impacts of skull modification, also known as artificial cranial deformation.

Tattoos were once used to identify status

Around 450 BCE, Scythians inhabiting what is now southern Siberia were recorded as wearing tattoos of swirling mythical beasts to signify nobility. At the same time, tattoos have identified lower-status and enslaved people.

The "green men" were among the first European pyrotechnicians

In the 1600s, men wore leaf-covered caps when handling fireworks to protect against sparks. Headgear was also worn by those helping to maintain order when leading medieval fireworks processions, often acting like jesters to entertain viewing audiences.

The 1939 film changed Dorothy's slippers from silver to ruby

Baum’s original book listed the slippers as silver, but the filmmakers wanted the shoes to pop on film—and highlight their use of Technicolor—so they turned them ruby. The slippers wound up becoming one of the movie’s most iconic elements.

Child mortality rates since ancient Rome

One of the great achievements of modern humanity has been the sea change in child mortality rates—the chance that a newborn eventually lives past puberty. For thousands of years, children had a 50% chance of not entering adulthood. About 300 years...

Hear how the Black Death reshaped Europe's economy

The Black Death killed tens of millions across Europe, but the labor shortages that followed shifted economic power. With fewer workers available, survivors demanded higher wages and better conditions—sparking what historians call a medieval “Golden Age of Labor.”

The names of the 12 months are (mostly) derived from the Romans

January is named after two-faced Janus, February stems from a festival known as Februa, March comes from the god of war, Mars, and so on. Learn the origins and see ancient statues or art for the inspiration for each name of the month.

Thirty weird facts about Christmas trees

From its fascinating origin to how yours is grown today, these incredible Christmas tree facts will add a little bit more wonder to your holiday season.

For centuries, it was common to sleep in two shifts: a few hours at the beginning of the night, and a longer period beginning around midnight

Volcanic activity may have triggered the Black Death by spewing gases that led to crop failures in Europe, thus forcing the import of grain ships with plague-infested fleas.

The Dracula character, now seen as the vampire archetype, was inspired by a seafood-induced nightmare its creator experienced.

Bone marrow (soft tissue found inside certain bones) generates roughly 500 billion new blood cells each day

Stars appear to twinkle because turbulence in the motion of molecules in Earth's atmosphere causes light to bend and wiggle rapidly on its way to the surface—a phenomenon called scintillation.

The Brothers Grimm were lawyers before they were storytellers, and became interested in fairy tales as they began investigating how rules and customs had been passed down through cultures.

Memecoins are a type of cryptocurrency—a form of digital currency with a wide variety of uses—created around popular 'memes,' or viral internet jokes.

Prince's sexually explicit 1984 track 'Darling Nikki' attracted the ire of the Parents Music Resource Center, an advocacy group that inspired the Parental Advisory sticker, even though the song ends with a Christian message.

Stanford built a Google Maps for the Roman Empire, revealing how much it cost to travel in the ancient world

Many legends about George Washington, including his supposed wooden teeth and the story of cutting down the cherry tree, lack evidence.

Fear or disgust related to clusters of holes and cracks, called trypophobia, may stem from evolutionary processes to help us avoid pathogens.

Exploring the Larry Bird punch that almost changed March Madness

Georgia O'Keeffe's flower paintings are often assumed to be sexual, though the artist claimed she was simply interested in highlighting the beauty of flowers that most people neglect

Some Pokémon have been named after real and fictional organisms, while some real-world species have been named after Pokémon, such as Chilicola charizard and Binburrum zapdos.

The word 'jazz' evolved from 'jasm,' 19th-century American slang for 'energy'

See photos of Meteora, a mountainous site in central Greece, home to 14th-century monasteries perched atop soaring outcroppings.

The term 'algorithm' originated from the Latinized name of al-Khwārizmī, a 9th-century mathematician whose works introduced Arabic numerals and the decimal-based numeral system to Europe and whose treatise 'Al-Jabr' gave algebra its name.

Crows are believed to have intelligence on par with a seven-year-old child and demonstrate complex behaviors, from problem-solving with tools to recognizing human faces.

Poison ivy can cause rashes year-round since all parts of the plant contain urushiol, the oil that triggers our allergic response.

For centuries, Niagara Falls has been a magnet for daredevils seeking to conquer one of nature's most powerful wonders, with its 200-foot drop and water rushing at 32 feet per second with 280 tons of force.

The most expensive ad of all time was for Chanel No. 5 perfume and cost roughly $33M to produce in 2004—about $57M in today's dollars.

Use this calculator to find the dollar value of your mental load, from meal planning to coordinating after-school care for your children.

Budweiser stores yeast derived from the original 1800s strain in a secret bunker, which only the Head of Yeast Management can access—not even the CEO

Sunflowers have long been a symbol of nuclear disarmament because they can extract large amounts of radioactive cesium from soil.