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The English language is vast — so vast, in fact, that the average native speaker knows only about 6% of all English words, which equates to roughly 35,000 of the 600,000 words in the Oxford English Dictionary. That percentage may seem small, but the fact that most of us get by just fine on a daily basis suggests the other 94% of words are fairly obscure or redundant. English has one of the largest vocabularies of any language due to its history of freely incorporating words from other languages, particularly French (the origin of at least 30% of English words). Most adults learn an average of one new word per day until middle age, when vocabulary growth tends to slow or even stop — all the more reason to keep the mind sharp with crossword puzzles and word games.

English is the most widely spoken language in the world.

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Though Mandarin Chinese and Spanish have more native speakers, English takes the top spot when factoring in those who speak it as a second language.

Different studies have shown slightly different stats, of course. While one estimates the average English-speaking adult’s vocabulary somewhere between 20,000 and 35,000 words, another estimates it closer to 42,000. The latter study featured 70 real words alongside 30 made-up words and asked subjects to identify which was which; however, they weren’t required to define the words. This could account for the higher estimate of known words, as participants may have recognized some words without actually knowing their meanings.

Numbers Don't Lie

Numbers Don't Lie

Unique words in Shakespeare’s collected works
28,829
New words added to Merriam-Webster.com in 2024
200
Words in the Spanish language
~150,000
Average number of letters in an English word
4.5

Oxford’s 2025 word of the year was “______.”

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Oxford’s 2025 word of the year was “rage bait.”

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The longest word in English has 45 letters.

You’ve probably never spoken the longest English word out loud, which is good for two reasons. The first is that pneumonoultramicroscopicsilicovolcanoconiosis clocks in at 45 letters and is exceedingly difficult to pronounce. The second is that it’s defined as “a lung disease caused by inhalation of very fine silicate or quartz dust,” which is to say that if you ever have occasion to speak it, it may not be a happy one.

To get even more technical, Merriam-Webster notes that the longest “string of letters used to describe something,” which isn’t a word but rather the chemical name of a protein, contains a staggering 189,819 letters and takes 50 pages to write in its entirety. (So you’ll excuse us not including it here.) It also takes more than three hours to pronounce, a feat that at least one person has actually accomplished.

Michael Nordine
Staff Writer

Michael Nordine is a writer and editor living in Denver. A native Angeleno, he has two cats and wishes he had more.

Original photo by Andriiii/ Shutterstock

Your eyes are how you see the world, but they’re also how you see yourself — including inside of your own eye. You may have experienced this while having your eyes examined, such as when the doctor shines a light on your pupils. When light comes from a small point and hits your eye just right, you can see your own blood cells as they move through the capillaries on your retina. The light reflects off the vessels, casting a shadow onto the light-sensitive cells in the retina and rendering them visible to your brain in a pattern of orange or red coloration. Each heartbeat sends those blood cells surging, adding a rhythmic quality to this strange phenomenon. 

The eye muscle is the fastest in the body.

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The orbicularis oculi, the muscle that controls the eyelids, is indeed faster than any other muscle. Each eye contains one, which closes and opens the eye in less than 100 milliseconds.

You may also have experienced what’s called the blue field entoptic phenomenon while staring at the clear blue sky and noticing clear, floating cells moving through your field of vision. Unlike red blood cells, white blood cells don’t absorb the short wavelength of the blue light, allowing you to see them as they flow through the blood vessels in front of the retina. These are different from floaters (small spots that move through your field of vision), which tend to increase with age as the vitreous fluid in your eye changes thickness. In most cases, floaters are a normal aspect of aging, though in excess they could be a sign that you should have your eyes checked.

Numbers Don't Lie

Numbers Don't Lie

Eyes a box jellyfish has
24
Percentage of the world population with brown eyes
79%
Genes that affect eye color
~16
Times most people blink in a minute
14-17

The rarest of the main eye colors is ______.

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The rarest of the main eye colors is green.

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Owls don’t have eyeballs.

There’s a good reason owls can crane their neck so well: They only barely move their eyes. That’s because they don’t have eyeballs; rather, they have eye tubes or cylinders that are fixed mostly in place to look straight ahead. As countless field mice can attest, their vision doesn’t exactly suffer from this lack of movement. Owls’ binocular vision allows them to see with both eyes at the same time, a relatively rare trait shared by humans, snakes, wolves, and other predators. Their field of vision is roughly 110 degrees, 70 degrees of which are binocular; humans, by contrast, have a visual field of 180 degrees, with 140 degrees being binocular.

Michael Nordine
Staff Writer

Michael Nordine is a writer and editor living in Denver. A native Angeleno, he has two cats and wishes he had more.

Original photo by Pi-Lens/ Shutterstock

Woolly mammoths seem old-school. Hunted by Neanderthals for tens of thousands of years, these elephant-like mammals, some with tusks up to 15 feet long, evolved hair and layers of fat to withstand the frigid temperatures of the ice age tundra as they roamed the northern reaches of Asia, Europe, and North America. Although no longer among us, their bones — and in some cases mummified remains — fill natural history museums around the world. But these ancient beasts aren’t as ancient as you might think. In fact, it’s estimated that the last woolly mammoth died around 1700 BCE — some 800 years after ancient Egyptians built the Great Pyramid of Giza.

Mammoths and mastodons are the same animal.

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While they’re very similar — hairy, huge tusks, elephantine — there are some differences if you know where to look. Mammoth skulls have a knob on top, unlike the mastodon’s smooth domes, and mastodon teeth are designed for snapping twigs, whereas mammoth teeth are built for grazing.

As the Earth began transitioning out of the last ice age some 12,000 years ago, a warming world altered the woolly mammoth’s ecosystem. Melting glaciers created a wetter planet that destroyed the vegetation mammoths relied on for food, and this dramatic shift — along with continued human predation — led to complete extinction of the creatures in most areas around 8000 BCE. However, small pockets survived on some islands that benefited from both cold-weather vegetation and protection from human hunters. 

Some of the last known mammoths lived in isolation on Wrangel Island, a Russian possession in the Arctic Ocean just northwest of Alaska, and they didn’t have an easy go of it. Scientists who compared a 4,300-year-old mammoth bone from Wrangel Island to mammoth specimens 10 times older and from the Siberian mainland found that these final woolly mammoths experienced what scientists call a “genetic meltdown” due to the limited gene pool on the island, with mutations that likely made it harder to mark territory and choose mates. As for the ancient Egyptians, they kept chugging along until the death of Cleopatra, in 30 BCE. With its transformation into a Roman province, the 3,000-year-old dynasty also went the way of the woolly mammoth.

Numbers Don't Lie

Numbers Don't Lie

Episode of “Sesame Street” that introduced Mr. Snuffleupagus, a muppet based on a woolly mammoth
276
Average height (in feet) of a woolly mammoth
13
Years woolly mammoths roamed Earth
5 million
Number of mammoth species currently known, including the woolly mammoth
10

Woolly mammoths flourished during a geologic epoch known as the ______.

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Woolly mammoths flourished during a geologic epoch known as the Pleistocene.

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The woolly mammoth is a leading candidate for a controversial process known as “resurrection biology.”

What if scientists could bring an animal back from extinction? It’s a question famously explored in Michael Crichton’s 1990 science fiction novel Jurassic Park (and the subsequent movie adaptations), even if the answers there were less than encouraging. One problem in the fictional setup was that humans and dinosaurs are separated by 65 million years of evolution — but what if scientists brought back an animal that roamed the Earth alongside humans? That’s the question scientists are exploring with a process called de-extinction, also known as resurrection biology. Because it’s likely impossible to create an exact copy of an extinct animal, de-extinction aims to create “proxy” animals that fulfill the same ecological function. One plan is to alter the genome of elephants to create a cold-resistant, mammoth-elephant hybrid, or a mammophant. Biologists working on the project aren’t aiming to open an ice age-themed amusement park, but instead want to reintroduce the creatures to the tundra where they can once again control arctic shrubs and trees while manuring the soil. In 2021, a de-extinction company called Colossal raised $15 million to bring back the woolly mammoth, and soon announced that calves could walk the Earth within a few years. Yet the idea remains controversial: Instead of working on de-extinction, some scientists want to leverage the gene-editing technology (and the funding that comes with it) to save the many vulnerable animals still struggling for survival today.

Darren Orf
Writer

Darren Orf lives in Portland, has a cat, and writes about all things science and climate. You can find his previous work at Popular Mechanics, Inverse, Gizmodo, and Paste, among others.

Original photo by Resource Database/ Unsplash+

Cabbage. Scratch. Dough. Americans have used many creative nicknames for dollar bills over the past two centuries, though one of the more technical terms — “paper money” — could be considered just as misleading. Turns out, U.S. dollars are made not from paper, but instead from a fiber blend of 75% cotton and 25% linen. This water-resistant, durable material can hold up to far more wear and tear than actual wood-pulp paper could. While a dollar can be torn with intentional force, it would take an estimated 4,000 repetitive folds in the same spot to cause a tear. American dollars also include red and blue synthetic fibers, which are woven into the material and included to make counterfeiting more difficult.

U.S. dollar bills have always been green.

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Green ink on U.S. bills emerged during the Civil War, a move that made it more difficult for counterfeiters to reproduce bogus bucks through (black and white) photography.

Despite its strength, no dollar bill lasts forever. The Federal Reserve generally allows cash to continue circulating regardless of age, so long as it’s in great shape — free from tears, holes, and writing, and still legible. However, all bills have an expected lifespan based on denomination. Smaller bills typically see more frequent use and wear out faster, with $5 bills having the shortest life at just 4.7 years and $1 notes lasting around 6.6 years. After being removed from circulation, threadbare bills are shredded and move on to a new purpose: 90% of destroyed dollars are used to make potting soil, compost, and construction materials like cement.

Numbers Don't Lie

Numbers Don't Lie

Denominations available in U.S. paper currency
7
U.S. states in the “Cotton Belt,” stretching from coast to coast
17
Number of $100 bills that can be made from one bale of cotton
313,600
Estimated number of $2 bills still in circulation
1.4 billion

Early U.S. pennies used the motto “Mind Your Business,” a phrase popularized by ______.

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Early U.S. pennies used the motto “Mind Your Business,” a phrase popularized by Benjamin Franklin.

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No living person can have their picture printed on U.S. currency.

The portraits on U.S. currency have traditionally depicted the country’s presidents and founding leaders, though at one time an employee of the federal government put his own face on a paper bill. Spencer Clark served as the superintendent of the National Currency Bureau during the 1860s, a time when the U.S. Treasury temporarily printed paper bills for small denominations under $1 during a coin shortage. Historians are unsure exactly how Clark’s face wound up on the 5-cent note, though one possible explanation is that the bill was supposed to feature William Clark, half of the famous Lewis and Clark exploring duo. However, an alleged miscommunication led Spencer Clark to instead authorize his own image to be printed. Congress was outraged — especially considering Clark’s poor reputation, stemming from prior accusations of fraud and unprofessional conduct — and moved to ensure no other person could commit a similar act. In 1866, Congress passed a law that allows only deceased people to appear on the country’s currency.

Nicole Garner Meeker
Writer

Nicole Garner Meeker is a writer and editor based in St. Louis. Her history, nature, and food stories have also appeared at Mental Floss and Better Report.

Original photo by PeopleImages/ iStock

Gravity is an essential force on Earth: It keeps the planet in orbit at a safe and comfortable distance from the sun and even holds our atmosphere in place. It does have a downside, however: It weighs down the human body, making us a tiny bit shorter by the end of the day. From the moment we climb out of bed in the morning, gravitational forces push down on us, applying downward pressure on our joints, compressing our spines, and causing our organs to settle. All that strain adds up, enough to shrink a body by 1 centimeter. Gravity is at work whether we’re sitting or standing, but at bedtime, our bodies get a slight reprieve as lying down redirects the force. Sleeping horizontally gives our spines and joints time to decompress and gain back the height lost during the day, making us once again slightly taller by morning. 

Children have more vertebrae than adults.

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At birth, humans tend to have 33 vertebrae — the individual bones that make up the spinal column. By adulthood, many of those bones have completed the normal process of fusing together, leaving the average adult with just 24 vertebrae.

Even though this ebb and flow is a normal process our bodies endure, over time humans tend to shrink in stature. The human body constantly breaks down and replenishes its bones to keep them healthy, though by age 35, that process tends to slow, with bones breaking down faster than they rebuild. The aging process also causes the cushions between our bones to retain less water and deteriorate, which makes the bones settle together. These processes slowly chip away a few millimeters of height at a time, which can eventually add up — on average, men tend to lose an inch of height between 30 and 70 years old, while women can lose up to 2 inches.

Numbers Don't Lie

Numbers Don't Lie

Estimated number of genes that impact a person’s height
12,000+
Average number of inches children grow per year after age 2
2.5
Height (in feet) of Robert Wadlow, the world’s tallest man ever
8’11”
Approximate height (in feet) of Afshin Ghaderzadeh, the world’s shortest living man
2’1”

On average, the world’s tallest people are from ______.

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On average, the world’s tallest people are from the Netherlands.

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Astronauts get taller in space.

Most people reach their maximum height by early adulthood — unless they’re astronauts. That’s because scientists who rocket into space for extended periods tend to grow about 3% taller during their time off Earth. In astronaut Scott Kelly’s case, a 340-day trip aboard the International Space Station gave him the souvenir of around 2 additional inches of height. NASA research on astronaut bodies shows that while in space, the spine’s vertebrae decompress and relax, giving space explorers the benefit of added height. However, that increase in stature is temporary; once back on Earth, the planet’s gravitational forces are back in play, causing those extra inches to disappear.

Nicole Garner Meeker
Writer

Nicole Garner Meeker is a writer and editor based in St. Louis. Her history, nature, and food stories have also appeared at Mental Floss and Better Report.

Original photo by Chronicle/ Alamy Stock Photo

Not everyone gets to meet their idols. Henry Ford, one of America’s manufacturing giants, did — and was even lucky enough to become friendly with his hero. The automobile creator long looked up to serial inventor Thomas Edison, and in 1891, toward the start of his career, landed a job as a night engineer at the Edison Illuminating Company in Detroit. Eventually, the two inventors crossed paths at a work party, where Edison supposedly inspired Ford to further pursue his experimental automobiles. Ford had recently created his first prototype, the Ford Quadricycle, and eventually left the company to work on prototypes that became the Model T. But that wasn’t where their relationship ended — Edison and Ford quickly became friends, corresponding regularly, dedicating speeches to one another, and even purchasing neighboring estates in Florida. So it’s no surprise that the Henry Ford Museum in Dearborn, Michigan, features artifacts from both inventors, though some are unusual — such as a test tube that supposedly contains Edison’s final breath.

Thomas Edison invented the incandescent light bulb.

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Credit for Edison’s best-known invention is somewhat misplaced; he did make improvements to the incandescent bulb, but he didn’t create it. Inventors tinkered with the bulbs for at least 40 years before Edison received his patent, which added bamboo filaments to help bulbs last longer.

Legend has it that Ford, who had an eccentric bent and was interested in life after death, obtained the vial by asking Edison’s son Charles to capture his friend’s final breath. However, that tale is a bit hyperbolic. Historians believe that the tube was actually given to Ford as a sentimental gesture in honor of his friend. According to a letter written by Charles Edison in 1953, a set of empty test tubes was close to his father’s death bed when the inventor died in 1931. Charles requested that the attending doctor seal the tubes with paraffin wax, potentially capturing his father’s last breaths, and later gifted one to Ford. The test tube at the Henry Ford Museum is not the only one of its kind — Edison’s estate includes a collection of 42 test tubes that supposedly contain the inventor’s final breaths.

Numbers Don't Lie

Numbers Don't Lie

Year of Edison’s first patent for an invention, the electric vote recorder
1869
U.S. patents awarded to Thomas Edison
1,093
Year Ford left Edison’s company to launch the Ford Motor Company
1899
Times Henry Ford ran for public office, losing a 1918 race for U.S. Senate
1

Henry Ford once designed a plastic car made from ______.

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Henry Ford once designed a plastic car made from soybeans.

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Thomas Edison and Henry Ford once camped with a president.

If you’ve ever hit the open road with your best friend, you might be more like Henry Ford and Thomas Edison than you know. Together with two other friends — naturalist John Burroughs and tire manufacturer Harvey Firestone — they set out on a series of summer camping trips. Between 1914 and 1924, the group (who called themselves “the Four Vagabonds”) trekked along the eastern coast, camping in the Adirondacks, the Catskill Mountains, and throughout Virginia, Tennessee, and North Carolina, among other places. On one adventure in July 1921, the group (minus Burroughs) invited Warren G. Harding, then-sitting president of the United States, to camp in Maryland, in a spot the crew dubbed “Camp Harding.” However, the adventures of the Four Vagabonds weren’t just for fun; they were part of a media campaign that depicted the businessmen as “roughing it” when in reality they often slept at hotels and had a large staff accompanying them to cook meals.

Nicole Garner Meeker
Writer

Nicole Garner Meeker is a writer and editor based in St. Louis. Her history, nature, and food stories have also appeared at Mental Floss and Better Report.

Original photo by Katya123ua/ Shutterstock

To most grocery shoppers, there’s nothing particularly exciting about cauliflower. While the dense and crunchy stalks of this cruciferous plant are great as a side dish or snack, they’re consumed far less than the most popular produce-aisle picks (potatoes, tomatoes, and onions). However, some farmers might say that cauliflower has at least one unique and unexpected property that’s worth your attention: If you listen closely, you can hear it growing.

In the U.S., nearly all cauliflower is grown in one state.

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There’s a good chance that the majority of cauliflower you’ve ever eaten in the U.S. has come from one state: California. The Golden State is a produce powerhouse, and its farmers produce around 90% of the country’s cauliflower supply. (Arizona and Oregon also contribute.)

While most plants are silent, cauliflower is able to eke out a barely audible sound thanks to how quickly it grows. The vegetable can add as much as 1 inch per day under the right growing conditions. That rapid expansion means the florets of the plant’s popcorn-like heads often rub against one another as they grow, creating a noise many farmers call “cauliflower creak.” Some agriculturalists describe the tone as a soft squeak, while others say it’s best described as the faint popping noise made by Rice Krispies cereal when doused in milk. However, there are occasions when cauliflower fields reach a more detectable decibel, like in 2015, when British farmers were graced with optimal weather conditions for their cauliflower harvests. That year, some cauliflower cultivators alerted vegetable enthusiasts to what they believed would be the loudest cauliflower creak in decades.

Numbers Don't Lie

Numbers Don't Lie

Water content in a head of cauliflower
92%
Weight (in pounds) of the world’s largest cauliflower, harvested in the U.K.
60.5
Amount (in pounds) of fresh cauliflower eaten per person in the U.S. in 2020
2.61
Pounds of cauliflower harvested in the U.S. in 2020
1.003 billion

The edible head of a cauliflower plant is called a ______.

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The edible head of a cauliflower plant is called a curd.

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Vienna is home to a group of vegetable musicians.

The Austrian city of Vienna is often called the “capital of classical music” — after all, it’s where some of history’s most prominent composers (such as Mozart and Beethoven) spent much of their time. It also happens to be a spot where modern experimental artists, like the Vegetable Orchestra, perform regularly. Founded in 1998 as a joke, the group of nearly a dozen musicians builds its own instruments from fresh produce purchased at nearby markets, fashioning drums from pumpkins, recorders from carrots, and more than 150 other produce contraptions. Each concert requires around 70 pounds of vegetables, which are made into instruments over two to three hours and last only one performance. However, audiences who attend Vegetable Orchestra concerts don’t just hear their veggies; they get a chance to eat them, too, since the band’s produce scraps are crafted into a soup that is served after every performance.

Nicole Garner Meeker
Writer

Nicole Garner Meeker is a writer and editor based in St. Louis. Her history, nature, and food stories have also appeared at Mental Floss and Better Report.

Original photo by Gina Guarnieri/ iStock

Umbrellas have been around for a long time — at least 3,000 years, according to T.S. Crawford's A History of the Umbrella — but they were used by only select segments of the population for much of that history. Ancient Egyptians used them to shade their pharaohs, setting the tone for an association with royalty and nobility that would also surface in China, Assyria, India, and other older civilizations. Meanwhile, they were deemed effeminate by ancient Greeks and the Romans who assumed many of their cultural habits. It should be noted that these early umbrellas protected against the sun, not rain, and were generally used by women to shield their complexions. The association between women and umbrellas persisted through much of Europe for centuries, and stubbornly remained into the 18th century, even after the first waterproof umbrellas had been created (around the 17th century in France).

Baltimore was once the umbrella capital of the world.

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The nation’s first umbrella factory opened in Baltimore in 1828. The Beehler Umbrella Factory motto was “Born in Baltimore, Raised Everywhere!” By the 20th century, Baltimore factories made 1.5 million umbrellas annually, and the city was deemed the umbrella capital of the world.

In England, at least, the man credited with ushering in a new age of gender-neutral weather protection was merchant and philanthropist Jonas Hanway. Having spotted the umbrella put to good use during his many travels, Hanway took to carrying one through rainy London in the 1750s, a sight met with open jeering by surprised onlookers. The greatest abuse apparently came from coach drivers, who counted on inclement weather to drive up demand for a dry, comfy ride. But Hanway took the derision in stride. Shortly after his death in 1786, an umbrella advertisement surfaced in the London Gazette, a harbinger of sunnier days to come for the accessory’s reputation as a rain repellant for all.

Numbers Don't Lie

Numbers Don't Lie

Umbrellas owned by the average person in Japan, per a 2014 survey
3.3
Diameter (in meters) of the world’s largest umbrella
24.5
Umbrellas sold annually in the United States
33 million
Consecutive weeks Rihanna’s “Umbrella” topped the Billboard Hot 100 in 2007
7

The English word “umbrella” originates from the Latin term “umbra,” meaning “______.”

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The English word “umbrella” originates from the Latin term “umbra,” meaning “shade/shadow.”

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Umbrella champion Jonas Hanway was a pronounced opponent of tea drinking.

You’d expect a man bold enough to navigate the hardscrabble streets of 18th-century London with a dainty umbrella to possess a certain determination to get things done, and indeed, Jonas Hanway was a champion of many causes. He founded the Marine Society to recruit cadets for the navy, served as an executive for the Foundling Hospital children’s home, advocated for the safety of chimney sweepers, and even attempted to convince a nation of tea drinkers that they were doing something profoundly wrong. This last effort came by way of his 1756 work “An Essay on Tea,” which summed up the evils of the seemingly benign refreshment with the subtitle: “Considered as pernicious to health; obstructing industry; and impoverishing the nation.” As with his umbrella crusade, his zealous stance on tea drinking was met with a degree of public mockery, most notably in a response by famed British writer and lexicographer Samuel Johnson in Literary Magazine. But there was no posthumous redemption to be earned in this particular arena, as his countrymen and women went right on indulging themselves with the beverage, and continue to do so to the tune of 100 million cups daily.

Tim Ott
Writer

Tim Ott has written for sites including Biography.com, History.com, and MLB.com, and is known to delude himself into thinking he can craft a marketable screenplay.

Original photo by Mickey O'neil/ Unsplash

Climate change isn’t just raising the temperature of the world’s oceans — it’s also changing their color. As the oceans absorb the excess heat generated by greenhouse gases, that heat is altering the aquatic life in their waters. Research published in Nature in 2023 shows that the familiar blue hue of the oceans has been steadily transforming over the past 20 years into a greener shade, especially in tropical and subtropical areas of the world. 

The world’s largest migration happens in the ocean every single day.

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Every night, trillions of sea creatures called zooplankton travel to the ocean’s surface to feed on photosynthesizing phytoplankton. Although the distance for some organisms is only 1,000 feet, that’s the equivalent of a human swimming 50 miles in an hour.

The color of the ocean is dependent on a variety of factors, but one key is the light absorption of H2O. Water usually readily absorbs longer wavelengths of light — red, yellow, and green — and scatters blue. However, a concentration of marine life can cause emerald waters. The newly green hue detected by the 2023 research likely reflects a change in the ocean’s phytoplankton — the algae responsible for 70% of the world’s oxygen, and which also provides the foundation for the marine food web. Scientists monitored ocean color using NASA’s Aqua satellite, and found marked shifts toward green in about 56% of the world’s oceans between 2002 and 2022. Statistical simulations showed that added greenhouse gases are to blame, although it’s not exactly clear how, since areas that warmed the most at the surface weren’t the ones that turned green the most. Some scientists theorize that the change may have to do with reduced mixing in the layers of ocean water, caused by the heat, which limits the nutrients that rise to the surface and consequently affects the types of plankton that can survive. But don’t go color-correcting your photos just yet: While satellites can detect the change in ocean hue, the change is slight enough that most humans probably wouldn’t notice a difference.

Numbers Don't Lie

Numbers Don't Lie

Percentage of the Earth that’s covered by oceans
71%
Maximum ocean depth (in feet), found at the Pacific Ocean’s Mariana Trench
36,201
Estimated number of phytoplankton species in the world’s oceans
20,000
Episode of “The Muppet Show” in which Kermit sings “It’s Not Easy Bein’ Green”
219

The world’s cleanest and clearest large body of water is the U.S.’s ______.

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The world’s cleanest and clearest large body of water is the U.S.’s Crater Lake.

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Human eyes are most sensitive to the color green.

Human eyes can perceive only a small fraction of the electromagnetic spectrum. The visible spectrum, which excludes things like radio waves, X-rays, infrared, ultraviolet, and (very dangerous) gamma rays, stretches from around 380 nanometers (nm) to about 740 nm. Glimpse a rainbow — or recite the elementary school acronym ROYGBIV — and you’ll notice that green lies right in the middle of our visual sweet spot. The color occupies around 520 to 565 nm, and the light sensitivity of the human eye in daytime peaks at about 555 nm, which is a green that’s close to yellow. Because of this advantageous middle-of-the-road placement, the human eye can discern more shades of green than any other color. Since seeing green is also less of a strain on our visual system, the color positively affects our mood — essentially, our nervous system gets to relax. Green’s innate ability to “placate and pacify” is one reason the hue can often be found in places of healing, especially hospitals.

Darren Orf
Writer

Darren Orf lives in Portland, has a cat, and writes about all things science and climate. You can find his previous work at Popular Mechanics, Inverse, Gizmodo, and Paste, among others.

Original photo by sveta_zarzamora/ iStock

The circus brought death-defying performers and exotic animals across the American landscape in the 1800s, but it also introduced something a little sweeter: pink lemonade. There are two origin stories for the rose-tinted drink, both involving the big top. One version, revealed in a 1912 obituary, credits the invention to Chicago saloonkeeper, theatrical promoter, gambler, and circus vendor Henry E. Allott. The story goes that after running off to join the circus at age 15, Allott accidentally dropped some red cinnamon candies into a tub of traditional lemonade, only to find that the new mixture was a hit with concession-stand customers.

Pink lemons produce pink-colored juice.

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Named for the color of their flesh, pink lemons yield a clear-colored liquid.

The alternate and more colorful version of the drink’s dawn comes courtesy of an innovative clown named Pete Conklin circa 1857. Fed up with his wages, Conklin renounced the bells and sequins, and instead followed the circus as a lemonade vendor while his former co-workers wound their way through Texas. One hot day, legend has it, Conklin was dismayed to find he had run out of water as his parched customers demanded something to drink. Scouring the lot for replenishment, he dashed into the changing tent of bareback horse rider Fannie Jamieson, who was washing her red tights in a bin of water. Conklin grabbed the bin, its contents colored pink by the garment's aniline dye, and after dumping in the usual sugar and soggy lemon, he unveiled his new “strawberry lemonade” to an appreciative crowd. This story was later confirmed by Conklin’s lion-tamer brother George, and while it may be a tall tale regardless, it’s the type that goes down well when accompanied by a tall glass of our favorite pink beverage.

Numbers Don't Lie

Numbers Don't Lie

Tablespoons of juice produced by one medium-sized lemon
2-3
Average salary of a U.S. circus clown in 2023
$55,632
Calories in 8 ounces of Tropicana Pink Lemonade
100
Year the band Closure in Moscow released their album “Pink Lemonade”
2014

The Jewish community of medieval Egypt drank a proto-lemonade of lemon juice and sugar called ______.

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The Jewish community of medieval Egypt drank a proto-lemonade of lemon juice and sugar called qatarmizat.

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Circus peanuts were used to create a famous breakfast cereal.

Circus peanuts likely didn’t originate at the circus, and their murky origins are just one of the many mysteries surrounding the banana-flavored marshmallow treat that ostensibly has something to do with peanuts. Fortunately, there is one thing we know for certain about this holdover from 19th-century penny candy bins. According to General Mills, a product developer named John Holahan decided to mix chopped-up circus peanuts with Cheerios while experimenting with new cereal ideas in the early 1960s. The result was the marshmallow-oat mix that became Lucky Charms, another food product with a name that offers no clue to its content, but nevertheless has endured as a staple of American culture.

Tim Ott
Writer

Tim Ott has written for sites including Biography.com, History.com, and MLB.com, and is known to delude himself into thinking he can craft a marketable screenplay.