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In the early 1970s, a young Steve Wozniak — the future co-founder of Apple — was doing some casual “phreaking” in his college dorm room at Berkeley University. A portmanteau of the word “phone” and “freaking,” phreaking was a method through which technologically savvy ne’er-do-wells could hack into early telecommunication systems using a gadget called a “blue box.” The result? Free phone calls anywhere in the world. To test his newly acquired phreaking abilities, Wozniak placed a call to the Vatican, asking to speak with the pope. Putting on his best impersonation of Henry Kissinger (then-President Richard Nixon’s secretary of state), Wozniak nearly got the pope on the line until a high-ranking bishop caught him in the lie. The jig was up. 

Segway polo’s championship cup is named after Steve Wozniak.

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In 2006, the sport of Segway polo (it’s exactly what it sounds like) named its championship cup, the Woz Challenge Cup, after its most famous player — Steve “Woz” Wozniak.

This wasn’t a one-off incident — pranks played a vital role in the history of Apple, which was founded in 1976. Steve Jobs, like Wozniak, also had a love for practical jokes. During his early school years, Jobs placed firecrackers under his teacher’s chair (no major injuries were reported), and switched all the combination locks on his classmates’ bikes. After Jobs and Wozniak understood the power of the blue box, the duo sold a homemade version of the gadget for $150 to fellow Berkeley students. Nearly 40 years later, Jobs’ love for pranks hadn’t faded. When he introduced the world to the iPhone in 2007, Jobs called a local Starbucks and ordered 4,000 lattes while on stage. Thankfully, he quickly let the unlucky barista off the hook with a lighthearted “just kidding.”

Numbers Don't Lie

Numbers Don't Lie

Season of “Dancing With the Stars” in which Steve Wozniak competed
8
Number of popes in history
267
Purchase price of the Apple-1, the first Apple computer (Wozniak liked repeating digits)
$666.66
Year the world’s first prank call was recorded, in the journal “Electrical World”
1884

Steve Jobs sold his ______ to raise capital for manufacturing the first Apple computers.

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Steve Jobs sold his Volkswagen minibus to raise capital for manufacturing the first Apple computers.

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Steve Wozniak is still an Apple employee.

Although Apple wouldn’t exist without Steve Wozniak, the famous computer engineer hasn’t been actively involved with the company for some 40 years. Wozniak was vital in the company’s early days as the mastermind behind its first big commercial success, the Apple II. But after suffering a head injury in a plane crash in 1981, he began pulling away from the company, and eventually sold much of his stock in 1985 amid growing friction with his fellow co-founder Steve Jobs. However, Apple kept Wozniak on the payroll as an “honorary employee” with a $50-a-month salary. Although that’s a pittance for such an important figure in Apple history, Wozniak made out just fine when Apple went public in 1980, and is worth at least $100 million 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 Tamas Tuzes-Katai/ Unsplash

There’s off the map, and then there’s Argleton. The English town was visible on Google Maps until 2009, which is notable for one major reason: No such place exists. So how did it get listed? Though never confirmed by Google, it’s been speculated that Argleton may have been akin to a trap street — a fictitious road used by cartographers to catch anyone copying their work. The reasoning is as simple as it is clever: If a street (or, in this case, town) that you made up ends up on another map, you’ll have caught its creator red-handed in copyright infringement.

The fictional city of El Dorado used to appear on real maps.

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Today we know that the mythical city of gold, once thought to be in South America, doesn’t exist, but for centuries it was believed to be real — so much so that it appeared on maps as recently as 1808. (No word on whether Atlantis was on those same maps.)

Though little more than an empty field in West Lancashire, Argleton once had its own (presumably auto-generated) job listings and weather forecasts. Once its (non-)existence became known on the internet, humorous T-shirts with slogans such as “New York, London, Paris, Argleton” and “I visited Argleton and all I got was this T-shirt” appeared online, too. Google itself was tight-lipped on the subject, releasing a brief statement noting that “Google Maps data comes from a variety of data sources. While the vast majority of this information is correct there are occasional errors.” The good people of Argleton likely would have been highly offended by that characterization — if they actually existed.

Numbers Don't Lie

Numbers Don't Lie

Approximate year when the world’s first known map was created, in Babylon
600 BCE
Petabytes of data used by Google Maps — the equivalent of 21 million gigabytes
20
Miles of road driven by the Google Street View team
5 million
Sale price of the first map to use the name “America” (purchased by the Library of Congress in 2003)
$10 million

America is named after the explorer and navigator ______.

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America is named after the explorer and navigator Amerigo Vespucci.

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Most maps are highly misleading.

If you ever had a map of the world on one of your classroom walls, there’s a good chance it used the Mercator projection. Created by Flemish cartographer Gerardus Mercator in 1569, it has proved popular for centuries — but it also distorts sizes and distances near the North and South poles, resulting in major discrepancies. Perhaps the most notable of these is how small Africa appears: Greenland looks larger than the continent, for instance, despite being about 14.5 times smaller. To demonstrate this, a graphic artist created a map of his own showing that the United States, China, India, Japan, and most of Europe could all fit inside Africa.

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 ecpseminiano/ iStock

There’s epic, and then there’s volcanic lightning, a phenomenon that sounds like something out of a sci-fi movie but is, in fact, real. Volcanic lightning is just what it sounds like: lightning that happens during a volcanic eruption, rather than a thunderstorm. It’s thought to occur in two contexts: either in dense clouds of ash near the ground or close to the stratosphere. 

The first happens when individual ash particles rub together to form enough static electricity to generate a lightning bolt. The second is caused when plumes of water vapor and ash erupt with such force that they rise high enough to form ice crystals in colder air. Those ice crystals then generate static electricity as they collide with one another, leading to what’s also known as a “dirty thunderstorm.”

An erupting volcano can cause another volcano to erupt.

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Though there have been a few historic cases of simultaneous eruptions within 10 miles of one another, there’s no evidence that one caused the other.

The first known description of volcanic lightning is owed to Pliny the Younger, who wrote of the 79 CE Mount Vesuvius eruption that “there was a most intense darkness rendered more appalling by the fitful gleam of torches at intervals obscured by the transient blaze of lightning.” Vesuvius also happens to be where the first studies of volcanic lightning took place in 1858.

Numbers Don't Lie

Numbers Don't Lie

Potentially active volcanoes in the world
1,500+
Major tectonic plates
7
People who live within “danger range” of a volcano
350 million
Size (in cubic miles) of Mauna Loa, the world’s largest active volcano
~18,000

The country with the most volcanoes is ______.

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The country with the most volcanoes is the United States.

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More than 80% of the Earth’s surface is volcanic in origin.

There’s a high chance the spot you’re standing or sitting in right now is of volcanic origin. More than 80% of the planet’s surface is, whether above or below sea level. Though volcanos themselves aren’t exactly known for being hospitable, their countless eruptions over hundreds of millions of years have helped form the sea floors, mountains, and atmosphere that made Earth a life-supporting planet.

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 Vahit Ozalp/ iStock

The next time you find yourself enjoying a grilled sandwich, impress any nearby Italian speakers by using its proper name: “panino,” not “panini.” The latter term is actually plural, while “panino” — a diminutive of pane, meaning “bread” — is singular. 

This is similar to several other Italian words we English speakers tend to use incorrectly, such as “graffiti” (singular: “graffito”) and “paparazzi” (singular: “paparazzo”). Italian panini also differ from the kind eaten in the U.S. in that they aren’t always grilled and tend to feature just two or three ingredients.

Unlike panini, “spaghetti” is both plural and singular.

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Following the same construction as “panini”/“panino,” a single strand of spaghetti is a spaghetto. The same is true of ravioli (raviolo) and gnocchi (gnocco).

Italians have been making sandwiches for centuries, but panini as we think of them today were popularized in Milan in the 1970s. It was there that bars known as paninoteche became so popular that an entire fashion-based youth movement, called paninaro, took its name from them. Young people known as paninari tended to hang out at these sandwich bars because they’d grown weary of the slow pace of other more classic Italian restaurants, and panini were the closest thing to fast food available in the area at the time. Paninari were so hip at the time, in fact, that they inspired a song by Pet Shop Boys. Those must have been some pretty good sandwiches.

Numbers Don't Lie

Numbers Don't Lie

Microstates within Italy (Vatican City and San Marino)
2
Kilograms of pasta eaten annually per capita in Italy, the most in the world
23.2
Kings of Rome before it became a republic
7
Countries bordered by Italy (Switzerland, France, Slovenia, and Austria)
4

The modern pizza was invented in ______.

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The modern pizza was invented in Naples.

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Margherita pizza was named in honor of an Italian queen.

Raffaele Esposito, a baker from Naples often credited with inventing the modern pizza, is believed to have named the dish in honor of Queen Margherita of Savoy (sound familiar?) after she visited his city in 1889. In addition, he used the Italian flag’s three colors as inspiration for its main ingredients: red tomatoes, white mozzarella, and green basil.

As the pizza increased in popularity, it also helped improve the reputation of the humble tomato, which had been feared throughout Europe for centuries because it was incorrectly thought to be poisonous. After realizing the true reason some aristocrats were falling ill was because the pewter plates used to serve the fruits contained high levels of lead, attitudes toward the tomato relaxed by the late 1800s.

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 Sari ONeal/ Shutterstock

If you know anything about calico cats, it’s that they’re especially cute. If you know two things about them, the second might be that only about 1 in every 3,000 of them is male. The tricolor kitties — which are most often but not always white, orange, and black — get their distinct coat from their chromosomal makeup. Female cats have two X chromosomes, which carry the coding gene for black and orange coloration, and the only way for calico coloring to occur is for a kitten to get one black-coded X and one orange-coded X. The same is also true of tortoiseshell (tortie) cats, which are predominantly black and orange — and known for their “tortitude.” (The white patches in calicos, meanwhile, happen through a separate genetic process called piebalding, which produces areas of skin and fur without any pigment.) 

Most orange cats are female.

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Quite the opposite, in fact — about 81% of orange cats are male. Whereas females will be orange only if they carry that gene in both X chromosomes, males will be orange if they carry it in either the X or Y chromosome.

Though extremely rare, male calicos and torties do exist. This is usually the result of one of two conditions: chimerism or Klinefelter’s syndrome. The former occurs when two embryos fuse early in pregnancy, resulting in two different sets of DNA, while Klinefelter’s is the result of a male inheriting an extra X chromosome and therefore having XXY chromosomes. Making them even rarer is the fact that male calicos are almost always sterile, meaning it’s all but impossible to breed calicos — every one you see is an anomaly, and all the more special for it.

Numbers Don't Lie

Numbers Don't Lie

Pedigreed cat breeds recognized by the Cat Fanciers’ Association
45
Estimated number of domestic cats in the world
400 million
Hours per day the average cat spends sleeping
12-18
Percentage of American households with at least one cat
25.4%

Calicos are the official state cat of ______.

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Calicos are the official state cat of Maryland.

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Calicos are considered good luck.

There’s a reason that maneki-neko are so often depicted as calicos: They’re considered good luck. The “beckoning cat” figurines found throughout Japan and at Japanese and Chinese establishments around the world are intended as tokens of good fortune, with one of their paws raised high in a waving motion. This dates back to the tradition of Japanese sailors traveling with calicos to bring about safe passage — the multicolored cats were believed to be able to chase away storms and ancestral ghosts. In the United States and England, meanwhile, male calicos are considered especially lucky because of their rarity.

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 Photo 12/ Alamy Stock Photo

Ernest wasn’t the only eccentric Hemingway. Leicester, the younger brother of the author of For Whom the Bell Tolls and The Sun Also Rises, was also a writer and used the proceeds from his biography, My Brother, Ernest Hemingway, to establish his own micronation. He did so on July 4, 1964, citing the obscure U.S. Guano Islands Act of 1856 to claim an 8-by-30-foot bamboo raft floating 8 miles off the coast of Jamaica, in international waters, as his own sovereign land. The Guano Islands Act grants U.S. citizens the right to claim, on behalf of the U.S., any unoccupied “island, rock, or key” where valuable guano (read: bird droppings used as fertilizer) can be found. Patriot that he was, Leicester ceded half of his humble territory to the U.S. and declared the other half the Republic of New Atlantis.

Ernest Hemingway had only one sibling.

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Though they were the only boys in the family, Leicester and Ernest Hemingway had four sisters: Mercelline, Ursula, Madelaine, and Carol. Ernest, who was born in 1899, was the second-oldest after Marcelline, while Leicester (born in 1915) was the youngest.

As is often the case with micronations, the founder of New Atlantis took it more seriously than anyone else. He drafted a constitution that was actually just the United States Constitution with “New Atlantis” replacing every instance of “United States,” created stamps, enlisted his wife to design a nice flag, and declared shark teeth and carob beans to be the country’s official currency, called “scruples.” Not long after Leicester Hemingway was voted the first president of New Atlantis in what we can only assume was a landslide, however, the country’s coffers ran empty (perhaps due to a lack of taxpayer revenue).  The country’s primary activity seems to have been issuing stamps — meant to finance marine protections in the area — but the Universal Postal Union never recognized the stamps, or the country. Within a few years of its founding, the raft became untethered during a storm, drifted out to sea, and was destroyed, consigning New Atlantis to the dustbin of history.

Numbers Don't Lie

Numbers Don't Lie

Novels published by Ernest Hemingway (three posthumously)
10
Books published by Leicester Hemingway
6
Estimated number of current micronations
67
Year Ernest Hemingway won the Nobel Prize in literature
1954

______ was the godmother of Ernest Hemingway’s first son, Jack.

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Gertrude Stein was the godmother of Ernest Hemingway’s first son, Jack.

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Ernest Hemingway preferred to write standing up.

Every writer has their own routine, and it’s little surprise that the A Farewell to Arms scribe’s was as idiosyncratic as he was. Ernest Hemingway preferred to write in the morning, and did so standing up. This was “a working habit he has had from the beginning,” according to The Paris Review, and he might have picked up the habit from his editor, Maxwell Perkins. And though he preferred the pencil, Hemingway turned to the typewriter when he needed to get something down especially quickly, such as dialogue: “When the people are talking, I can hardly write it fast enough or keep up with it,” he told The New Yorker in 1950.

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 Marek Rybar/ Shutterstock

Before humans roamed the Americas in great numbers, the continent was home to some of the Earth’s largest animals: the massive American mastodons of the Yukon, the giant ground sloths of South America, and human-sized armadillo-related creatures called glyptodons. But even before these impressive specimens, another beast of tremendous proportions plied the waters of the Pacific Northwest. Its scientific name is Oncorhynchus rastrosus, but it’s known as the “sabertooth salmon.” The sabertooth salmon looked similar to the pink-hued fish found at most supermarkets today, except for one major thing — it was up to 8 feet long. 

Salmon and flamingos are pink for the same reason.

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Salmon and flamingos live the maxim “you are what you eat.” Both animals digest orange-red pigment called carotenoids found in krill and shrimp, which turn them pink. Farmers and zookeepers artificially introduce the pigment in order to create this natural hue in captivity.

This giant salmon’s natural range included what’s now California, Oregon, and Washington. Much like modern salmon, it primarily lived in the Pacific Ocean while spawning in bodies of fresh water along the coasts. The fish gets its gruesome name from its teeth, which — unlike those of the similarly named saber-toothed tiger — stuck out like spikes on its snout. Scientists believe these teeth were primarily used in mating displays, fighting, and building redds (aka nesting sites). While this massive salmon went extinct about 5 million years ago, long before humans arrived on the continent, the surviving members of its genus, such as the Chinook and coho salmon, are still some of the most important and beloved species of the Pacific Northwest.

Numbers Don't Lie

Numbers Don't Lie

Number of salmon species still swimming North American waters
5
Maximum number of eggs a female salmon lays per redd
5,000
Approximate weight (in pounds) of Oncorhynchus rastrosus
390
Size (in centimeters) of Oncorhynchus rastrosus’ “saberteeth”
2-3

Salmon are ______, which means they migrate from oceans to fresh water to spawn.

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Salmon are anadromous, which means they migrate from oceans to fresh water to spawn.

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The saber-toothed tiger is not a tiger.

One of the most fearsome predators of the Pleistocene Epoch (1.8 million to 10,000 years ago) was the saber-toothed tiger. Despite its popular name, this feline, known in scientific circles as “smilodon,” isn’t closely related to the modern tiger at all. Although they share the same family (felidae), smilodon is a member of the now-extinct machairodontinae sub-family, which includes other big-toothed cats from around the world, such as the Homotherium serum (scimitar-toothed cat). But while “tiger” is a bit of a misnomer, “saber-toothed” is right on the money, since the smilodon sported canines that grew to 7 inches long (more than twice the length of a modern tiger’s). Modern humans and “saber-toothed cats,” as scientists now call them, likely co-existed for some time, and scientists are still working to understand exactly why these formidable felines went extinct.

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 AnnBaldwin/ iStock

Each June, stores roll out their Father’s Day best — sales on ties, watches, and barbecue grills. But when Father’s Day was first created, a much smaller token was given out to dads: roses. Flowers aren’t as heavily advertised for Father’s Day now as they are for mothers in May, yet the link between dads and the delicate blooms comes from the earliest American celebrations of the holiday.

Roses are the national flower of the U.S.

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Many flowers were in the running, but only one became the official bloom of the United States: the rose. President Ronald Reagan signed a proclamation certifying the rose as the national flower in 1986, over other suggestions such as marigolds, dogwoods, and columbines.

The first known Father’s Day is tied to the West Virginia mining community of Fairmont. On July 5, 1908, the town held a church service honoring the lives of fathers in their community, many of whom had perished the December before in what is widely considered the worst mining disaster in U.S. history. However, the church event was held just one time, and another city propelled the holiday into national view. 

In 1909, Sonora Smart Dodd launched her campaign to honor fathers from her home in Spokane, Washington. As the daughter of a Civil War veteran and widower who had raised six children, Dodd believed fathers deserved recognition for their roles. Within a year, she had drummed up community support, and on June 19, 1910, Washington became the first state to celebrate Father’s Day. Dodd’s first festivities included an exchange of roses; children gave red roses to their fathers and pinned color-coded buds to their shirts — red for living fathers and white roses in honor of the deceased. The activist even rode through the city, handing out flowers and gifts to fathers who couldn’t leave home. Over time, the tradition of giving roses to dads faded away, but the holiday stuck around. After years of rallying, Father’s Day became a federally recognized holiday in 1972

Numbers Don't Lie

Numbers Don't Lie

Number of children fathered by John Tyler, the most of any U.S. president
15
Number of countries where Father’s Day is recognized (although not all celebrations are held in June)
111
Estimated number of fathers in the U.S., according to the U.S. Census Bureau
72 million
Estimated number of stay-at-home dads in the U.S. as of 2022
239,000

The Thousand-Year Rose, the world’s oldest rose bush, grows alongside a church in ______.

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The Thousand-Year Rose, the world’s oldest rose bush, grows alongside a church in Germany.

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Activists have called for a "Parents' Day" to replace Mother's Day and Father's Day.

Mother’s Day and Father’s Day have long been honored as separate holidays, but in their earliest years, some organizers considered merging the two. A few American activists pushed for a replacement “Parents’ Day” during the 1920s and ’30s, with plans for the festivities to be held on the second Sunday in May (overwriting Mother’s Day). Robert Spero, one of the idea’s most ardent supporters, regularly led Parents’ Day festivities in New York City’s Central Park; in 1931 he argued separate holidays created a “division of respect and affection” within families that should be replaced with a date that instead served as a “reminder that both parents should be loved and respected together.” However, Spero’s efforts never took hold on a grand scale, in part because of the Great Depression. Retailers capitalized on Father’s Day to generate gift-giving dollars in a tight economy, and with the onset of World War II, the date became a new way to honor men’s contributions to the war effort.

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 PV productions/ Shutterstock

Over the course of two weeks in the fall of 1896, some 75,000 people stepped onto the curious contraption stationed at Coney Island's Old Iron Pier. Initially created by engineer Jesse Reno for use in the New York City subway system, the "inclined elevator" carried people on a conveyor belt-type platform, at an angle of 25 degrees, to a height of 6 or 7 feet from the ground. Although it lacked individual steps, the inclined elevator featured accompanying handrails and shallow platform grooves that allowed it to pass seamlessly through a pronged top landing, making it the first working escalator.

There are only two sets of escalators in the entire state of Wyoming.

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The escalator sets are located in separate banks in the city of Casper. Their scarcity across the Cowboy State is likely explained by fire codes that prohibit unprotected openings between adjacent floors.

Reno wasn't the first to muse on a means for automatically moving people to higher floors. In 1859, lawyer and inventor Nathan Ames obtained a patent for his "Revolving Stairs," which he proposed could be made from wood or metal, and powered by steam, weights, or hand. In other words, it was more of a fanciful concept than an invention with a clear path to becoming a reality, and the idea was left to gather dust. Thirty years later, amateur engineer Leamon Souder followed suit with a patent for his "Stairway," a series of steps pushed at an incline along an "endless propelling-belt." While more practical than Ames' creation, Souder's Stairway was also never built, leaving Reno to claim the glory after patenting his version in 1892.

While Reno’s business lifted off with the installation of four of his inclined elevators in New York City's Siegel Cooper Department Store in 1896, he soon faced stiff competition from inventor Charles Seeberger. Having purchased a patent from explorer George Wheeler, Seeberger coined the term "escalator" and teamed with the Otis Elevator Company to develop a new and improved model. Similar to today's versions with steps that emerged from the bottom and flattened at the top landing, the prototype wowed onlookers at the 1900 Paris Exposition. By 1920, Otis had absorbed both Seeberger's and Reno's patents and installed 350 escalators around the world, the moving stairway now well past the point of spectacle and clearly established as a mode of casual transportation for modern city-dwellers.

Numbers Don't Lie

Numbers Don't Lie

Patent number of Jesse Reno’s inclined elevator
470,918
Height (in centimeters) of the world’s shortest escalator
83.4
Typical inclination (in degrees) of a modern escalator
30
Annual escalator passengers in the U.S.
105 billion

The sides of an escalator are called ______.

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The sides of an escalator are called balustrades.

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The Norwegian city of Trondheim features the world's only bicycle escalator.

Why bother pedaling a bike up a hill when you can have a machine do the hard work for you? That was the mindset of Norwegian industrial designer Jarle Wanvik, who set about creating an easier way up the 18-degree incline of Trondheim’s Brubakken Hill. Introduced in 1993 as the world’s first bicycle escalator, the Trampe provides a series of footplates that run along a track at the push of a button. With one foot pressed against a plate and the rest of the body on the bike as normal, users are propelled up the 400-plus-foot path at a rate of approximately 5 miles an hour. The Trampe carries 20,000 to 30,000 cyclists per year, according to Trondheim’s tourism site, and it reportedly has a strong safety record. However, perhaps because of high costs of installation — between $2,400 and $3,200 a yard as of 2014 — Brubakken Hill remains the lone place on this planet where bikers can enjoy the reward of quality views without the sweat usually needed to reach such heights (and without getting off their bikes — other “bike escalators” will carry a bike separately up a hill for you).

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 Bankim Desai/ Unsplash

Scientists have been putting names to species for hundreds of years, with Swedish botanist Carolus Linnaeus revolutionizing science with his binomial system — the foundation of modern taxonomy — in the 1750s. And while it may seem unlikely that any species could escape our gaze after centuries of searching, it turns out Mother Nature is pretty good at hide-and-seek. Today, scientists are aware of 1.7 million species, from the simple sea sponge to the gargantuan African bush elephant, yet estimates suggest there could be several million more species left to discover, or more. In fact, we may only know about 20% of all the species that are out there. Many of these yet-to-be-discovered animals live in some of the hardest-to-reach places, such as dense rainforests or the depths of the ocean. And many of them are incredibly tiny. 

All arachnids are spiders.

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“Arachnid” likely conjures up images of our favorite eight-legged friends, but there are other members of this creepy-crawly family. Mites, ticks, harvestmen, and scorpions are some of the other creatures that fall under the arachnid umbrella, alongside spiders.

Take, for instance, the spider. In April 2022, scientists announced that they’d discovered their 50,000th species of spider, Guriurius minuano, a member of the Salticidae family of jumping spiders. Found in the shrubs and trees of some parts of Brazil, Uruguay, and Argentina, this spider is one of over 6,000 jumping spiders already discovered — and it won’t be the last. According to the World Spider Catalog maintained at the Natural History Museum of Bern in Switzerland, Guriurius minuano is only the halfway point, as they expect another 50,000 spiders will be discovered in the next 100 years. Thanks to evolution, genetic mutation, and the many mysteries of nature, the work Linnaeus began so many years ago may never truly end.

Numbers Don't Lie

Numbers Don't Lie

Year Swede Carl Alexander Clerck published the text that gave spiders their first modern scientific names
1757
U.S. box-office gross for the 1990 film “Arachnophobia”
$53,208,180
Estimated number of plant and animal species discovered every year
18,000
Length (in feet) of the CGI version of Shelob, the hobbit-hungry spider from “The Lord of the Rings”
8

Young spiders are known as ______.

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Young spiders are known as spiderlings.

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Spiders could eat all humans in a year (not that they want to).

The world is full of itsy bitsy spiders, but those spiders have big appetites. According to some estimates, the world plays host to a collective 25 million tons of spiders, and a 2017 study concluded that those spiders eat between 400 million and 800 million metric tons (485 million to 970 million U.S. tons) of food a year. To put that staggering number into perspective, all of the adult humans on Earth weigh only 287 million tons. Luckily, humans are not the target of spiders’ voracious appetites. Instead, spiders prefer insects — though lizards, birds, and even mice can also be on the menu. Let’s hope, for all our sakes, that it stays that way.

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.