George Washington’s dentures were made from, among other things, hippo tusks.

  • George Washington’s dentures
George Washington's dentures
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Author Timothy Ott
February 26, 2025

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When forming a mental picture of George Washington, many of us likely flip through the brain rolodex to recall a portrait of the founding father staring back at viewers in a stately manner or calmly seated before the Continental Congress. However, these cool-as-a-cucumber depictions marked a stark contrast to reality, as Washington was often in pain from the tooth problems he endured for most of his adult years.

Whether due to childhood neglect, poor diet, or genetics, Washington had his first tooth pulled at age 24 and spent the rest of his life trying to play catch-up with fastidious attention to oral health. It wound up being a losing battle, as he was saving his pulled teeth for use in dentures by his early 50s. While real human teeth were a prize component of dentures, Washington accepted sets that included animal teeth as well as lead-tin, copper, and silver alloys — though notably not wood, as is often erroneously reported. By the time of his inauguration in 1789, the first U.S. president was wearing a customized set of dentures, built by New York dentist John Greenwood, that featured hippopotamus ivory and an array of gold wire springs and brass screws to hold its human teeth in place.

Unfortunately, the access to cutting-edge dental technology didn’t translate to an improved quality of life for Washington, who dashed off a series of letters to his dentist in later years that complained of the discomfort and bulging caused by his dentures. Still, the general seemed to realize there was little that could be done in this longtime war of attrition within his mouth, and when his final real tooth needed to be pulled in 1796, he gifted it to Dr. Greenwood.

The “L.A. Times” spoiled the winners of the 12th Academy Awards.

  • Vivien Leigh at 12th Academy Awards
Vivien Leigh at 12th Academy Awards
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Author Michael Nordine
February 20, 2025

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The internet may have made spoilers more common, but it certainly didn’t invent them. Back in 1940, for instance, the Los Angeles Times accidentally revealed the winners of the 12th Academy Awards by publishing them before the end of the event on February 29, 1940. At the time, the Academy of Motion Picture Arts and Sciences gave certain newspapers the list of winners prior to the event on the condition that they not publish them until after the ceremony concluded. As the 8:45 p.m. edition of the L.A. Times came out before that happened, the news spread that Gone With the Wind had won Best Picture before it was officially announced.

The film won seven other Oscars that night, including Best Director for Victor Fleming, Best Actress for Vivien Leigh, and Best Supporting Actress for Hattie McDaniel, making her the first Black person to win an Academy Award. Other big winners that night included Robert Donat, who was named Best Actor for his performance in Goodbye, Mr. Chips, and Thomas Mitchell, whose turn in Stagecoach earned him the Best Supporting Actor statuette. The Wizard of Oz, also directed by Fleming in one of the most notable years a director has ever had, won two Oscars: Best Original Score and Best Original Song for “Over the Rainbow.” Following the early reveal, the academy stopped giving out the winners early and started the sealed-envelope tradition that continues to this day.

A Catholic nun was the first U.S. woman to earn a Ph.D. in computer science.

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Catholic nun in church
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Author Sarah Anne Lloyd
February 20, 2025

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Although computer science goes back to the 19th century, the academic field really came into its own in the early 1960s. The first United States graduates with advanced computer science degrees emerged in the middle of that decade, and the first two Ph.D. candidates graduated on the same day (from different schools) on June 7, 1965. One of the graduates was not only the first U.S. woman to earn a Ph.D. in the field, but also a nun: Sister Mary Kenneth Keller, who earned her degree from the University of Wisconsin-Madison. (The other candidate was Irving Tang of Washington University in St. Louis.)

Keller was born Evelyn Keller, and her name was changed to Mary Kenneth after she took her vows with the Sisters of Charity of the Blessed Virgin Mary (BVM) in 1933 at age 19. She was assigned to teach elementary and high school for the next 29 years, so she earned her academic degrees slowly so as not to interfere with her duties. She graduated from DePaul University with a bachelor’s degree in mathematical sciences in 1943 and a master’s in mathematics in 1952.

Keller was working as a high school math teacher in Chicago when she took her first computer workshop in 1961. “I just went out to look at a computer one day,” she told religious publication The Witness, “and I never came back.” By delegating mundane tasks to computers, Keller said, people could “aspire to higher levels of thinking.” After graduation, she founded the computer science department at Clarke University, a college founded by the BVM in Dubuque, Iowa. She also taught adult computer classes on the side, including tutoring the famed architect Buckminster Fuller, and helped develop educational modules for BASIC programming.

Irving Berlin and Disney helped shape Eisenhower’s ‘I Like Ike’ campaign.

  • Irving Berlin, Eisenhower rehearse campaign song
Irving Berlin, Eisenhower rehearse campaign song
Credit: Bettmann via Getty Images
Author Timothy Ott
February 20, 2025

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Being the supreme commander of a victorious army is usually enough to make one a popular presidential candidate, but it can’t hurt to have the geniuses behind some of the world’s most beloved songs and films as prominent supporters. One such talent was Irving Berlin, who captured the widespread public approval for a Dwight D. Eisenhower presidency with his jaunty ditty “They Like Ike” in the 1950 musical Call Me Madam. In early 1952, with the NATO general still formally sitting out the race, Berlin unveiled a rewritten version of his show tune, titled “I Like Ike,” as part of a successful effort to push Eisenhower into the ring.

With Illinois Governor Adlai Stevenson emerging as the Democratic nominee, Eisenhower’s team sought an advantage by developing the first-ever presidential campaign TV commercials. One series of ads, created by crack advertising executive Rosser Reeves, featured the Republican candidate genially answering policy questions posed by people on the street. But the Eisenhower camp had an even stronger card to play, and they reached out to the Walt Disney Company for assistance in early autumn. 

The result was a pair of 20-second and minute-long animated commercials that featured people happily marching along to another “I Like Ike” jingle (this one not written by Berlin). Although Stevenson responded with his own series of sing-along and animated ads, the governor admittedly was no fan of this form of self-promotion, and he was never able to overcome the popularity deficit that allowed Eisenhower to cruise to an easy win in November 1952.

In colonial America, lobster was an undesirable food fed to prisoners.

  • Lobster watercolor, 1600s
Lobster watercolor, 1600s
Credit: Penta Springs Limited/ Alamy Stock Photo
Author Nicole Villeneuve
February 20, 2025

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Lobster has long been considered a culinary delicacy, but in colonial America it was seen as the cockroach of the sea. When European settlers arrived in North America in the 17th century, New England’s shoreline was littered with the clawed crustaceans. In fact, lobsters were so prevalent, they were used by Indigenous inhabitants as fishing bait or fertilizer. To the colonists, they served as a simple and abundant source of protein. Though eating lobster was useful in times of food scarcity — such as in 1623, when Plymouth Colony Governor William Bradford lamented that the settlers’ best meal was a lobster or a piece of fish — it wasn’t exactly desirable. The seafood was mostly fed to those with little say in their diets, such as prisoners housed near the coast and indentured servants working off their contracts.

Some stories about lobster’s pauper past — such as that prisoners were punished by being fed lobster every day — have most likely been exaggerated over time. Rules were reportedly put in place to prevent inmates from receiving regular servings, while servants were said to write lobster limits into their contracts. But it’s certainly true that for nearly two centuries, lobster was anything but a luxury. Its reputation didn’t really begin to change until the 19th century, when improved transportation allowed fresh lobster to reach inland diners — many of whom, by the late 1800s, enjoyed vacationing in New England and saw the seafood as a rare treat. As demand grew, so did prices, and with better cooking techniques in the 20th century, lobster transformed from a lowly sea pest to a food fit for a king.

Abraham Lincoln and Ben Franklin are both in sports halls of fame.

  • Abraham Lincoln and Ben Franklin portraits
Abraham Lincoln and Ben Franklin portraits
Credit: US National Archives (left), Archive Images (right)/ Alamy Stock Photo
Author Bennett Kleinman
November 29, 2023

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Abraham Lincoln and Benjamin Franklin aren’t just famous figures in American history — they were also accomplished athletes. Honest Abe has been honored by the National Wrestling Hall of Fame, while Franklin earned a spot in the International Swimming Hall of Fame

Standing 6 feet, 4 inches tall, Lincoln was a formidable opponent in amateur wrestling. At age 19, he reportedly defended his stepbrother’s river barge by throwing potential hijackers overboard. In 1831, he wrestled and defeated Jack Armstrong, the leader of a local gang in New Salem, Illinois. While some reports claim the pair may have actually fought to a stalemate, the bout earned Lincoln respect and a reputation for being tough. Lincoln continued to wrestle while studying law, and legend has it that he amassed more than 300 victories during a 12-year period, losing just one time. Lincoln was honored with the National Wrestling Hall of Fame’s Outstanding American award in 1992.

Franklin, meanwhile, was posthumously inducted into the International Swimming Hall of Fame in Fort Lauderdale, Florida, in 1968. During his life, he was an avid swimmer and spent time teaching and coaching the sport in Europe and America. Franklin even proposed that all schools in Philadelphia institute swimming programs. As a scientist and experimenter, the founding father is also credited as an inventor or early adopter of many swimming-related innovations, including kites for kitesurfing, hand paddles, and flippers.

In WWI, France started to build a fake Paris to confuse German bombers.

  • Gare de l’Est in Paris
Gare de l'Est in Paris
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Author Darren Orf
November 30, 2023

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Just after noon on August 30, 1914, about a month into World War I, a biplane marked with the German iron cross under its wings flew 6,000 feet above France’s capital city. Soon, to the surprise of Parisians below, four explosions rocked the city as the German pilot dropped bombs, by hand, in the world’s first aerial raid on a national capital. As an increasing number of attacks came from German planes (as well as the first wartime Zeppelins), Parisians decided to take drastic action. In late 1917, engineers commissioned by the French government began creating a fake Paris just outside the capital in an effort to fool the German air force. 

The project was led by Fernand Jacopozzi, who famously illuminated the Eiffel Tower and Champs-Élysées years later. One of the first re-creations was the Gare de l’Est railway station, which was a victim of Germany’s first bombing raid four years prior. Jacopozzi used creative electrical lighting and wooden boards on a conveyor belt to even simulate moving trains. He also crafted factory rooftops, fabricated from painted canvas, to simulate the manufacturing center of France’s war effort. However, by November 1918, the war was over, and the faux city was never completed, nor did it ever divert any German ordnance. Still, the idea proved to be a good one: Decades later during the Second World War, the U.S. employed Hollywood set designers to create fake West Coast neighborhoods to camouflage military factories from Japanese air raids. 

The Greek philosopher Pythagoras was terrified of beans.

  • Ripened fava bean
Ripened fava bean
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Author Sarah Anne Lloyd
November 29, 2023

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Pythagoras, the namesake of the Pythagorean theorem, was a highly influential early Greek philosopher, and a major inspiration for the likes of Aristotle and Plato. He was also a notorious hater of beans — specifically fava beans, also known as broad beans — and he strictly forbade his followers, the Pythagoreans, from coming into contact with them. Legend has it that a group of Pythagoreans (or in some versions, Pythagoras himself) was running from an enemy when they came upon a blooming fava field. Rather than step foot into the stalks, they turned to face their attackers. Most of them were killed.

Pythagoras didn’t leave any known, verifiable writing behind, and his followers were famously tight-lipped, so it can be difficult to know exactly why he hated these legumes. But according to works published after his death by Aristotle and others, there were several possible reasons. One was the bean’s supposed similarity to genitalia; according to his biographers, the philosopher associated beans closely with reproduction and the human soul. The fourth-century BCE philosopher Heraclides Ponticus quoted Pythagoras as saying, “Eating beans and eating the head of one’s parents are the same thing.” And Aristotle quoted him as saying that fava plants “are like the gates of Hades,” possibly related to the belief that souls literally emerged from the underworld through bean blossoms. The philosopher reportedly found the flatulence they caused distracting, too.

To be fair to Pythagoras, there may have been a very good reason to eschew beans. Eating raw fava beans or coming close to a blooming fava plant can cause severe illness and even death in a small number of people with a specific genetic disorder called favism. Scientists traced a type of this condition to the Mediterranean, which would include ancient Greece and other societies that approached the fava bean with caution, including Rome and Egypt.

In 1800, about 1 in 3 people lived in China.

  • Two men playing chess n China, 19th century
Two men playing chess n China, 19th century
Credit: Old Books Images/ Alamy Stock Photo
Author Sarah Anne Lloyd
February 12, 2025

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There are around 8 billion people on Earth today, and 1.4 billion of them are in China, making the country home to around 17.5% of the global population. If that seems high, consider that at the turn of the 19th century, a whopping 1 in 3 people lived in China. 

Between 1700 and 1800, the population of China more than doubled. There are a few reasons for this. For one, the mortality rate went down, in part because China practiced widespread inoculation for diseases such as smallpox. Other medical technologies became more commonplace, too, including birthing techniques that reduced infant mortality.

At the same time, the global population in general was on a dramatic upswing, growing about 45% over the course of the 18th century. Still, the population growth in China far outpaced that in the rest of the world. By the year 1800, the population of China was about 300 million, and the worldwide population was, by some estimates, about 900 million (other estimates say 1 billion). That places roughly a third of Earth’s population in China at the start of the 19th century. 

Apollo 12 left a piece of art on the moon.

  • Half-moon phase
Half-moon phase
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Author Bennett Kleinman
November 29, 2023

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When Apollo 12 departed Kennedy Space Center on November 14, 1969, the spacecraft was carrying a tiny artwork titled “Moon Museum” — albeit unknowingly to the astronauts aboard. The piece was a ceramic tile measuring less than an inch, inscribed with designs from six contemporary artists. However, the idea was never sanctioned by NASA, and “Moon Museum” had to be smuggled into space.

“Moon Museum” was the brainchild of concept artist Forrest Myers, who collaborated with artists Andy Warhol, Claes Oldenburg, David Novros, Robert Rauschenberg, and John Chamberlain. Each artist sketched a unique image on the tile. Warhol signed his initials in the upper left, forming the shape of a phallic rocket; Rauschenberg drew a line next to it, and Novros created a black square in the upper right. From left to right on the bottom row, Myers added an interlocking drawing, Oldenburg sketched Mickey Mouse, and Chamberlain drew an image based on a circuitry diagram.

Myers tried to get NASA’s approval to stow “Moon Museum” aboard the Saturn V rocket, but was met with radio silence. He then contacted an anonymous NASA engineer known today as John F. to help smuggle the artwork into space. The employee responded two days before launch, stating, “YOUR [sic] ON A.O.K. ALL SYSTEMS GO.” It’s believed “Moon Museum” was covertly attached to the lunar module and deposited on the moon during landing, though it’s impossible to confirm without sending another mission back to check.