'Tattoo' comes from a Polynesian word that means 'to strike'

Tattoos, explained

Tattoos last because immune cells trap ink beneath the skin—but there's more to the story. This overview looks at how ancient cultures used tattoos for status, spirituality and punishment; how technology like the electric tattoo machine transformed the art form, and where innovations like smart tattoos could take it next.

Samuel O’Reilly patented the tattoo gun in 1891

Before the tattoo gun's invention, recipients sweated while artists slowly tapped or sliced designs into their flesh. The tattoo gun changed the field, helping artists ink clients’ skin at incredible speeds. Inventor Samuel O’Reilly applied the basic idea of an electric pen invented by Thomas Edison to his tattoo gun.

Tattoos suppressed during colonization are experiencing a revival

A few decades ago, the distinct facial tattoos worn by Maori people were on the brink of disappearing. Then, Maori artists brought the cultural practice back into the spotlight. This TVNZ story follows one reporter’s mother as, at 59 years old, she receives tā moko from a Maori artist.

'Skin stitching' is an ancient tattoo method that's made a comeback

In the slow method, artists use needles to puncture the skin. Then, pigmented thread is drawn through the punctures to create the tattoo, resembling embroidery in the flesh. The method is experiencing a cultural revival within Canada’s First Nations communities.

Sailor tattoos represent naval milestones

Sailors often come home with mermaids or turtles adorning their bodies. But what does it mean to have permanent images of propellers on your bum, British galleons with soaring tiers of sails on your chest, or a bicep portrait of the Roman god Neptune? Those tattoos represent meaningful naval milestones.

Tinnitus is derived from the Latin verb tinnire, meaning to ring

Read the entry in The Physical Dictionary by Stephen Blankaart, from 1693, where the word first appeared in English.

Tattoos remain visible on your skin thanks to immune cells called macrophages

Women in WWII used tattoos to avoid capture

During World War II, Japanese soldiers kidnapped women from Southeast Asian countries and forced them into sexual slavery. But they hesitated to capture married women, a fact that women from the island of Timor exploited, painstakingly poking tattoos onto their bodies that marked them as married women.

The centuries-old history of titanium white goes back to the Inca

Titanium white can be found in items ranging from paint to pills. Though it was created in New York in 1908, the pigment was first used hundreds of years earlier by the Inca, according to this article.

'Graffiti' comes from the Italian for 'a scribbling'

The word was first used in 1851 to describe the ancient inscriptions on Pompeii's walls. "Graffiti" is the plural form of "graffito," which means "a scribbling."

There's no right way to say 'taco'

While Americans ("tah-co") and Brits ("tack-oh") might argue about the correct pronunciation, both are understood in Spanish-speaking countries. Linguists note that the word's pronunciation is ever-evolving and informed by various cultural, psychological, and historical factors.

Nail art can be traced back to 5,000 BCE

Archaeologists discovered Egyptian mummies with nail art and henna-tinted fingertips. The trend would continue informally for centuries until Revlon introduced modern nail polish in 1932.

Graffiti dates back to at least ancient Pompeii, where citizens scrawled messages to one another on public walls

Crowds used a thumb gesture to decide whether a gladiator lived or died

This explainer unpacks pollice verso, the hand signal spectators used to call for a gladiator’s execution. Ancient sources never specify the direction; evidence suggests that the thumb was likely turned up or thrust toward the throat, not down.

Gutai was performance art’s Japanese predecessor

Works by the post-WWII Japanese artist collective Gutai are widely considered a precursor to Western performance art of the 1960s and 1970s. The word “Gutai” means “concrete” in Japanese, referring to the concrete ways the artists’ bodies were used to create their works. Gutai members like Kazuo Shiraga, who painted with his feet to express the movement of his process, are thought to have influenced later artists like Jackson Pollock.

How did Polynesian wayfinders navigate the Pacific Ocean?

Ancient Polynesian navigators used the sun, moon, stars, clouds, currents, and more to sail the seas. People of Southeast Asia began their voyages to the region now known as Polynesia in roughly 1500 BCE. They would settle a vast area of 15 million square miles, including hundreds of islands, moving from islands due to overpopulation or war. Such voyages dwindled in 1300 CE as societies became more rooted.

A collection of ancient Mayan glyphs and pictographs

The Maya had a syllabic and pictorial writing style that featured many incredibly detailed glyphs. Click here to check out this ancient writing style (and maybe test out their related phonetic sounds).

Basquiat's crown motif acts as an artistic signature

While tagging graffiti across New York, Basquiat began to appreciate the power of repetition and branding, especially while establishing mystique through his “SAMO” tag. Some art critics argue that his crown motif serves a similar purpose, enabling viewers to recognize his work immediately.

A history of "Memento Mori," from the ancients to today

The ancient Latin phrase 'memento mori' means 'remember you will die.' The counterintuitive utterance has long provided a moral and spiritual framework for individuals to evaluate their life's decisions and worldview. Though it appears morbid at first glance, the saying is meant to inspire a thirst for life. Review the various ways the idea has inspired different cultures in this article, from the Romans and Egyptians to contemporary tech leaders like Steve Jobs.

Mapping the Tongan eruption impact

A team of scientists—with the help of an uncrewed boat remotely controlled from the UK—join forces to produce one of the clearest pictures to date of what took place underneath the water as an enormous volcano erupted near the Tongan mainland.

The term 'alcohol' has Arabic origins

Linguistic research reveals a lot about the ancient origins of alcohol. For example, studying various languages reveals that "mead," an alcoholic beverage made from honey, came even before wine.

He was one of the first writers to cover surfing

For his 1872 travelogue “Roughing It”, Mark Twain visited Hawaii and described a then-peculiar sport: surfing. He even recalls his own attempts to catch a wave, writing, “I got the board placed right, and at the right moment, too; but missed the connection myself. The board struck the shore in three-quarters of a second, without any cargo, and I struck the bottom about the same time, with a couple of barrels of water in me.”

Photolithography etches circuit components into a semiconductor wafer

A high-energy laser is fired at molten tin droplets, turning them into plasma that releases the ultraviolet light needed to burn the wafer's photoresist layer. A mask controls what parts of the wafer are etched for subsequent chemical processing.

The tongue evolved in animals roughly 350 million years ago

Creatures like fish rely on suction to consume food, flexing their gills to create water currents that vacuum up their meals. The evolution of the tongue enabled vertebrates to completely cut ties with the sea, moving onto land where they could sample new foods and ways to eat them.

Scholars debate the meaning behind the first word of 'Beowulf'

Beowulf is an Old English epic poem composed somewhere between the 8th and 11th centuries CE. Its first word, hwæt, is often translated to "what," though scholars debate its specific use in the poem, discussing whether it serves as an exclamation, interjection, or something else entirely.

Brazil's tropicália movement fused rock 'n' roll, Latin music, and poetry

Tropicália was a short-lived Brazilian style of rock 'n' roll that blended samba, bossa nova, modernist poetry, and American rhythm and blues that offered provocative, anti-authoritarian, and avant-garde ideas through popular music, much to the delight of the country's evolving youth culture.

The word 'punk' originally meant 'female prostitute'

The Oxford English Dictionary records the first usage before 1575. Shakespeare used the word in his play “Measure for Measure,” with one character suggesting another “may be a Puncke.” Over time, the word acquired additional meanings. By the 20th century, it was used as an insult for a young man.

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

See a 3D reconstruction of Tenochtitlan, the Aztec capital that was home to an estimated population of 200,000 to 400,000.

Poison ivy's characteristic rash is caused by an allergic response to an oily compound in the plant called urushiol.

Art theft is the third-largest source of criminal revenues worldwide, thanks in part to the subjective nature of valuing a work of art.

The concept of phantom limbs, the perception that amputated limbs are still present, dates back to a French military surgeon in the 16th century.

The animatronic shark from Steven Spielberg's 'Jaws,' the first modern blockbuster, was a complex underwater apparatus called 'Bruce.'

In 2018, 26-year-old missionary John Allen Chau was killed by tribesmen after attempting to reach and evangelize on India's isolated North Sentinel Island

Some coin denominations have ridges etched on their sides, partly to prevent counterfeiting, in a practice called 'reeding.'

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 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.

Dirty lightning is a thunderstorm created from friction between rising and falling flows of ash and smoke during volcanic eruptions.

Watch how deep-sea mining equipment collects and processes polymetallic nodules—metal-rich, potato-shaped rocks—from the ocean floor and creates environmentally damaging plumes of sediments.

The identity of the Tank Man in the iconic photo from the 1989 Tiananmen Square protests remains unknown and was possibly killed.

Corals are themselves not coral reefs—the term refers to the tiny marine invertebrates that build the rigid reef.

Mark Twain spent decades feuding with the US Postal Service, convinced its costs and regulations were bureaucratic overreach.

Objects can be 3D printed with light by projecting 2D computerized tomography (CT) scans onto rotating cylinders of resin, which solidify upon exposure.

Long before Major League Baseball began allowing instant replay for balls and strikes, an umpire reluctantly used the technology to determine whether a hit was a home run, a move that inadvertently ushered in a new era for the sport.

American short story writer Flannery O'Connor raised 40 peacocks, which became potent symbols for her fiction's elegant violence

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 US Constitution is widely regarded as the longest-standing written national constitution still in force—see how it has influenced rights worldwide.

The American cockroach is actually from Africa, an apparent hitchhiker aboard ships carrying enslaved people, with evidence suggesting the bug may have arrived in the New World as early as the 1600s.

This site reaches millions of visitors who are tired of AI chatbots and seeking human connection. Pretend to be an AI chatbot and ask questions, provide answers, and draw for people in real time.

Existentialist writer Jean-Paul Sartre coined the famous phrase 'Hell is—other people' in his play 'No Exit'