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The ancient Egyptians are known for many firsts. Hieroglyphics, papyrus, the calendar, and even bowling all come from the minds of the ancient people along the Nile. Egyptians were also some of the first to pay particular attention to oral care. Not only did they invent the first breath mint, but toothpicks have been found alongside mummies, and they created the oldest known formula for toothpaste. 

Teeth are considered bones.

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Teeth and bones are the hardest materials in the human body, but they’re very different. Bones are made of living tissue, so they’re constantly growing or regenerating throughout your life. Teeth are not living tissue, and are the only part of the human body that doesn’t regenerate.

The Ebers Papyrus, one of the earliest medicinal texts, contains an astoundingly accurate understanding of the human circulatory system as well as an assortment of medicinal remedies. Written around 1550 BCE, this ancient text also describes an ancient form of toothpaste. This early dentifrice was likely made from ingredients such as ox hooves, ashes, burnt eggshells, and pumice (a type of volcanic rock), but by the fourth century CE, when Egypt was under Roman rule, the recipe evolved to include salt, pepper, mint, and dried iris flower, based on descriptions in another papyrus. Egyptians may have applied the paste with toothbrushes made from frayed twigs.

Although Egyptian toothpaste may seem unrecognizable compared to the formulas found in modern tubes of Colgate or Crest, these ancient toothpaste recipes essentially do the same thing. Modern toothpaste uses materials known as abrasives to remove gunk from teeth, lessening the potential for decay and cavities. While Egyptians used salt and pepper (or pumice) for this task, today we use hydrated silica for that same abrasive purpose — though thankfully it’s gentler on our gums. And the mint the Egyptians used helped freshen their breath, just as today’s mint-flavored toothpaste does. So while our tubes of toothpaste are a relatively modern creation, cleaning our teeth is a habit that goes back at least as far as the ancients.

Numbers Don't Lie

Numbers Don't Lie

Teeth in an adult human mouth (wisdom teeth included)
32
Year William Colgate founded his eponymous company, first selling soaps and candles
1806
Amount (in milligrams per liter) of fluoride in toothpaste
1,000
Active dentists in the U.S., as of 2025
205,088

Invented in China in 1498, the first modern toothbrush used coarse hair from a ______ for bristles.

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Invented in China in 1498, the first modern toothbrush used coarse hair from a hog for bristles.

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Agriculture is why so many people need braces.

Every year millions of people get braces or have their wisdom teeth pulled. That’s because there isn’t enough dental real estate in the average human mouth. Although a boon for the dental profession, humanity’s mass malocclusion (or misalignment of teeth) wasn’t always this way. In our distant past, before we put down the hunting bow for the dirt-churning plow, human jaws comfortably accommodated all the teeth in our mouth. Yes, even our wisdom teeth. A study in 2015 analyzed the lower jaws of 292 skeletons ranging from 28,000 to 6,000 years old — an age range that straddles our adoption of agriculture some 12,000 years ago. Scientists noticed that early farmers had smaller jaws than their hunter-gatherer forebears. This is likely because before agriculture, Homo sapiens chomped hard-shelled nuts, uncooked vegetables, and tough meats, which required larger, stronger jaws. With the advent of farming, diets consisted of softer foods like beans and cereals, causing the size of the human jaw to decline over time because it’s not subject to the same amount of chewing time. Although our jaws are smaller, our number of teeth has remained the same, leading to the dental traffic jam experienced by millions 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.

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The world’s smallest flower is commonly found throughout North America (and the globe), but its bloom is so small, you may never catch a glimpse. Watermeal, aka various species of the genus Wolffia, is an aquatic plant that thrives in slow-moving ponds, marshes, and lakes; to the naked eye, clusters of watermeal can resemble a floating raft of algae. Under a microscope, it’s easier to see just how tiny individual watermeal plants are — they measure around 1/42 of an inch long and 1/85 of an inch wide, or about the size of a candy sprinkle. In fact, watermeal is so small that about 5,000 individual plants can fit inside a thimble. When they bloom, they’re rarely noticed.  

Butterflies may have existed before flowers.

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Butterflies and moths are important pollinators, but some scientists think the earliest known butterflies didn’t perform this crucial task. That’s because the oldest known butterfly fossils — 200 million years old — are 70 million years older than the first known flowers.

But it’s not just its minuscule size that makes watermeal distinctive. Unlike most plants, those in the Wolffia species have no roots, which allows them to float to the surface of water. There, the plants can grow rapidly and reproduce at top speeds. While capable of producing seeds, watermeal more commonly reproduces asexually by creating daughter plants that emerge from their buds. By producing two new plants every three days, watermeal can double its size in just 48 hours and quickly overtake waterways, choking out other aquatic life. However, in healthy aquatic environments, watermeal can be kept in check by providing nutrient-dense food for fish and waterfowl, and can also clean up waterways by removing excess nutrients — a reminder that even the smallest organisms have a role to play in the world around us.

Numbers Don't Lie

Numbers Don't Lie

Known species of angiosperms, aka flowering plants, on Earth
300,000
Age (in years) of the Monteschia vidalii, the oldest known flower (now extinct)
130 million
Approximate number of water lily paintings created by artist Claude Monet
300
Highest altitude (in feet) at which flowers have been found blooming (on Mount Kamet in the Himalayas)
21,000

______ is the world’s largest producer of cut flowers.

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The Netherlands is the world’s largest producer of cut flowers.

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The world’s largest flower weighs up to 20 pounds and smells like rotting meat.

Microscopic watermeal plants have something in common with the gigantic Rafflesia arnoldii: They both survive without roots. Yet the similarities end there. Rafflesia arnoldii lacks leaves and stems, too, and the flowers are more akin to parasites. Considered the largest flower in the world, with blooms measuring 3 feet wide and weighing up to 20 pounds, these plants attach themselves to other living greenery, absorbing nutrients from their hosts. When they do bloom, Rafflesia arnoldii — aka corpse lilies — produce a putrid smell similar to the stench of rotting meat. The disgusting odor has a specific purpose: It attracts carrion flies that help with pollination. Rafflesia blooms last just about a week, but the plants are capable of living for years in the rainforests of Sumatra and Borneo.

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.

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Throughout more than a century of publication, the Sears catalog was a go-to source for American shoppers seeking out standard home goods. But in addition to those traditional products, the catalog also offered some curious items for sale, including live chickens, 14-room mail-order houses, and even highly explosive dynamite. A 1902 edition of the catalog advertised dynamite as a tool for removing tree stumps, claiming it to be “far superior to any other agent.” The company also offered more powerful varieties that could be used for blasting into hard rock and even underwater. Sears sold dynamite for as little as 13 cents a pound — less than $5 today — along with all of the electric fuses, connecting wires, and blasting machines required for operation.

The former Sears Tower in Chicago used to be the world’s tallest building.

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The Sears Tower (now the Willis Tower) stands 1,450 feet tall, making it the world’s tallest building from its completion in 1973 until 1996. It took the record from the North Tower of the World Trade Center (1,368 feet), and was surpassed by the Petronas Towers of Kuala Lumpur, Malaysia (1,483 feet).

There were no prerequisites for purchasing this dynamite, despite the obvious safety risks associated with amateur use. Instead, Sears promised to “mail a booklet giving full information” to “those who are not familiar with handling dynamite,” hoping buyers would carefully follow the instructions. The dynamite could be found in the catalog’s “sporting goods” section, just a few pages away from comparatively mundane products such as baseball uniforms and hammocks. Eventually, however, dynamite and other more unusual items were phased out as Sears largely trended toward selling housewares. In future editions of the catalog, Sears noted that “to conform with the insurance laws,” it had been “forced to omit carbide from [its] stock,” which prevented it from selling explosives and combustibles. The traditional Sears catalog was discontinued in 1993.

Numbers Don't Lie

Numbers Don't Lie

Year Sears opened its first retail store
1925
Sears share price after it went public in 1906 (more than $3,000 today)
$97.50
Physical retail stores operated by Sears at its peak (including Kmart stores)
~3,500
Product varieties sold by the Sears catalog over the course of its history
100,000+

In 1990, ______ surpassed Sears as the largest U.S. retailer.

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In 1990, Walmart surpassed Sears as the largest U.S. retailer.

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Dynamite was invented by the namesake of the Nobel Prize.

Alfred Nobel was a Swedish chemist whose legacy consists of two major achievements: inventing dynamite and establishing the Nobel Prize. In 1862, Nobel opened a factory to produce nitroglycerin — an explosive liquid compound used in blasting mines. But the product was infamously unstable, and Nobel’s factory exploded in 1864. He spent the following years researching safer alternatives, and in 1867, he invented a more stable product by mixing nitroglycerin with kieselguhr (a porous rock). Nobel named this new compound dynamite — taken from the Greek dynamis, meaning “power” — and it earned him both global recognition as well as a staggering fortune.

After Nobel’s death in 1896, many wondered what would happen to his vast wealth. To the surprise of many, including his family, Nobel’s will mandated the money be used to establish a series of new international awards honoring annual achievement in topics including science, literature, and peace. After years of debated legal claims, the inaugural Nobel Prizes were awarded in 1901.

Bennett Kleinman
Staff Writer

Bennett Kleinman is a New York City-based staff writer for Inbox Studio, and previously contributed to television programs such as "Late Show With David Letterman" and "Impractical Jokers." Bennett is also a devoted New York Yankees and New Jersey Devils fan, and thinks plain seltzer is the best drink ever invented.

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The average person can probably name a couple of the more famous shipwrecks — maybe the Titanic or Queen Anne’s Revenge — but there are many, many more that have sunk from sight and public recollection. Altogether, it’s believed that at least 3 million such wrecks dot the ocean floors.

Bermuda has the most shipwrecks per square mile of any location on the planet.

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Although Bermuda measures less than 21 square miles, the combination of its location within trade routes and hazardous coral reefs has produced more than 300 shipwrecks off its coast.

If that number doesn’t seem particularly remarkable (humans have been building boats for at least 10,000 years, after all), then perhaps it’s more surprising to learn that less than 1% of these submerged crafts have been explored. Why such a small percentage? Well, the world’s oceans are enormous, reaching an average depth of more than 12,000 feet, and only 28% of the ocean floor has been charted in detail. There’s also the matter of the money needed to launch expeditions to find these vessels. But times are changing in the realm of wreckage discovery: The digitization of archives has made records more accessible, and the development of technologies such as remotely operated vehicles (ROVs) has rendered the searching process less treacherous for explorers.

So what becomes of most shipwrecks? Some of them are looted for profit, despite legal efforts to preserve the historical value of their artifacts. Some are turned into underwater museums. But most others become reefs — playgrounds for fish and other varieties of marine life. They may not receive the fanfare showered on the wreck of Titanic, but they nevertheless take on new and important functions far below the waves.

Numbers Don't Lie

Numbers Don't Lie

Estimated value (in U.S. dollars) of treasure on sunken ships
60 billion
Age (in years) of the oldest intact shipwreck discovered, in the Black Sea
2,400
Shipwrecks found over 22 days in the Fourni archipelago in 2015
23
Estimated number of shipwrecks across the Great Lakes
6,000

A 2022 Antarctic expedition found the wreck of explorer Ernest Shackleton’s ship, named ______.

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A 2022 Antarctic expedition found the wreck of explorer Ernest Shackleton’s ship, named Endurance.

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The deepest shipwreck was discovered more than 22,500 feet below the ocean’s surface.

Combine cutting-edge technology with the nerve needed to explore the most extreme corners of the Earth, and you wind up finding treasures once thought inaccessible. Such was the case with a former U.S. Navy intelligence officer named Victor Vescovo, who turned his attention from scaling the world’s highest peaks to scouring its deepest depths by way of a first-of-its-kind submersible dubbed the Limiting Factor. In 2021, Vescovo came upon the largely intact WWII destroyer USS Johnston resting some 21,180 feet below the surface of the Philippine Sea. A little more than a year later, Vescovo used the trail of the Johnston and the Limiting Factor’s sonar capabilities to locate another WWII craft, the destroyer escort USS Samuel B. Roberts, elsewhere in the Philippine Trench, at a depth of 22,523 feet. Although that latter mark currently stands as the world record for the deepest shipwreck, it probably won’t be long before Vescovo or another intrepid soul ventures even further into the unknown to see what can be uncovered.

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.

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True ambidexterity is the ability to use one’s left and right hands equally well when it comes to tasks such as writing or throwing a ball. This rare trait occurs naturally in roughly 1% of the global population (around 82 million people). In one 2019 study, 1.7% of respondents said they could use both hands interchangeably, far fewer than the 89% who were right-handed and the 9.3% who were lefties. 

The study also found a higher predisposition for ambidexterity among males than among females (2.1% and 1.4%, respectively), which some theorize may have to do with the effect higher testosterone levels have on brain development (though this has yet to be conclusively proved). This is just one of several studies on handedness — the tendency to use one hand over another — and while the exact percentages of right-handed, left-handed, and ambidextrous people vary, the results are largely consistent across the board.

Thomas Jefferson learned to write with his left hand at the age of 43.

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Though he was a natural righty, Jefferson learned to write with his left hand after dislocating his right wrist in 1786. The founding father’s left-handed letters were surprisingly legible, though the handwriting slightly differed from those written with his right hand.

The root cause of ambidexterity — or any handedness, for that matter — remains tough to pin down. A 2009 study suggested it may be determined by a combination of genetics and environmental influences (for instance, being taught to write with a certain hand in school). It’s also believed that ambidextrous people possess atypical brain laterality compared to right-handed individuals, which forms during development.

This cerebral asymmetry is arguably why ambidextrous people have a higher propensity toward conditions including ADHD, and why they generally are less proficient than right-handed people in topics such as arithmetic and logical reasoning. Ambidextrous people also possess a unique versatility when it comes to sports, playing music, or performing everyday physical activities.

Numbers Don't Lie

Numbers Don't Lie

Career home runs hit by Mickey Mantle (the most by a switch-hitter)
536
U.S. presidents who were left-handed
7
Percentage of the global population with green eyes
~2%
Longest distance (in miles) walked on two hands
870

Despite being left-handed, ______ often played right-handed guitars flipped upside down.

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Despite being left-handed, Jimi Hendrix often played right-handed guitars flipped upside down.

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Leonardo da Vinci wrote from right to left.

Italian, like most languages, is traditionally written from left to right, yet the famed Italian polymath Leonardo da Vinci wrote his notes from right to left — a unique style known as mirror writing. Not only was the direction reversed, but each letter was also flipped horizontally as if viewed through a mirror.

Some theorize that Leonardo practiced mirror writing to make it more difficult for people to read his notes and steal his ideas. Interestingly, he used mirror writing only when composing personal notes; if the text was intended to be read by anyone else, he wrote in the standard direction.

Others believe that Leonardo used mirror writing to avoid ink smudges on his left hand, which he used to write. The Renaissance man was a lefty (though some argue he was actually ambidextrous) and was known among his contemporaries as “mancino” — Italian slang for a left-handed person.

Bennett Kleinman
Staff Writer

Bennett Kleinman is a New York City-based staff writer for Inbox Studio, and previously contributed to television programs such as "Late Show With David Letterman" and "Impractical Jokers." Bennett is also a devoted New York Yankees and New Jersey Devils fan, and thinks plain seltzer is the best drink ever invented.

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You’ve probably heard people say things like “I’ll be there in a jiffy,” where “jiffy” means a very short period of time — something like the blink of an eye. But it may surprise you to learn that for some scientists, the term has a more precise definition. That definition varies depending on who’s doing the talking: The physical chemist Gilbert Newton Lewis (1875–1946) defined a jiffy as the length of time it takes for light to travel 1 centimeter in a vacuum. However, some physicists have defined a jiffy as the time it takes light to travel 1 femtometer — one-millionth of a millionth of a millimeter. By this account, each second contains roughly 300,000 billion billion jiffys.

Ancient Egyptians created today’s 60-minute hour.

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We owe a lot to ancient Egyptians for dividing time into something close to our own clocks and calendars. However, they divided the day and night into 12 hours each, which varied from 45 to 75 minutes long, depending on the season. Our 60-minute hour comes from the Babylonians.

But a jiffy has also been defined outside of physics and chemistry. An electrical engineer, for example, might describe a jiffy as the time it takes for a single cycle of alternating current, which is one-fiftieth or one-sixtieth of a second, depending on the electrical system. Whatever definition holds true, one thing is certain — no one in the history of the world has ever truly accomplished much “in a jiffy.”

Numbers Don't Lie

Numbers Don't Lie

Estimated years the world’s oldest clock, at Salisbury Cathedral, has kept time
640
Year Jiffy Lube was founded, in Utah
1971
“Atoms” — an Old English measurement — in a minute
376
Approximate year the word “jiffy” entered the English lexicon
1785

A leading theory suggests that “jiffy” was originally slang for a ______.

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A leading theory suggests that “jiffy” was originally slang for a flash of lightning.

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Technically, a second is not one-sixtieth of a minute.

It’s forgivable to think a second is one-sixtieth of a minute (or 1/86,400 of a day). After all, it’s pretty prominently displayed on every clock and watch ever built. But time isn’t nearly as neat as our timekeeping devices make it out to be. The universe is full of astronomical quirks, and for scientific purposes a second needs to be much more precise than a simple fraction. That’s why, in 1967, scientists changed the official definition of a second from 1/86,400 of a day to “the duration of 9,192,631,770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the caesium-133 atom.” This is the basic principle behind atomic clocks, super-accurate instruments that use atomic physics to maintain long-lasting accuracy. For some state-of-the-art devices, it would take 15 billion years for the clock to be off by one second.

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 Library of Congress/ Unsplash

More than 200 years after the 10th president of the United States was born, one of his grandsons was still alive. As impossible as that may seem, the math — and biology — checks out. John Tyler, who was born in 1790 and became president in 1841 after William Henry Harrison died in office (possibly of pneumonia), had a son named Lyon Gardiner Tyler in 1853. This son was born to the then-60-something Tyler and his much younger second wife, Julia Gardiner. Lyon then had two sons of his own in his 70s (also with a younger second wife), one of whom — Harrison Ruffin Tyler, born in 1928 — lived to be 96 years old. He died in May 2025.

George H.W. Bush and George W. Bush were the only father and son to both become president.

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The Bushes were preceded in this exceedingly rare feat by John Adams (1797–1801) and John Quincy Adams (1825–1829), the second and sixth presidents, respectively.

It may make this feat slightly less surprising to know that Tyler had 15 children, more than any other POTUS in U.S. history. Tyler’s actual presidency is less remarkable than this biographical oddity, alas — he was referred to as “His Accidency” upon assuming office and wasn’t renominated in the following election. (He was also an enslaver whose profitable plantation ran on the labor of 40 to 50 enslaved people.) Though his grandsons didn’t have major political aspirations, you might say it was in Tyler’s blood to seek office: His father, John Tyler Sr., was roommates with Thomas Jefferson at the College of William and Mary and later served as the 15th governor of Virginia.

Numbers Don't Lie

Numbers Don't Lie

Presidents who never had biological children (including George Washington)
5
Age (at death) of the oldest person ever
122
Vice presidents who later became president
15
Presidents who belonged to the Whig Party (including John Tyler)
4

President John Tyler belonged to the ______ Party.

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President John Tyler belonged to the Whig Party.

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Theodore and Franklin Roosevelt were fifth cousins.

It’s well known that the two commanders in chief were related, but how they were related is less-common knowledge. FDR assumed the presidency 24 years after his fifth cousin left the Oval Office, and their mutual political aspirations were no coincidence: The longest-serving president in U.S. history greatly admired his distant relative and intentionally followed in his footsteps. Teddy largely approved: Upon Franklin’s engagement to Eleanor — Franklin’s fifth cousin once removed — the younger Roosevelt received a note from the elder saying he was “as fond of Eleanor as if she were my daughter; and I like you, and trust you, and believe in you.”

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.

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Alaska is big — in more ways than one. Not only is it the largest U.S. state by a wide margin, but it’s also home to the 10 highest mountain peaks in the U.S., far more volcanoes than any other state, and more coastline than all the other states combined. Of the United States’ estimated 12,479 miles of coastline, Alaska accounts for some 6,640 miles all on its own, at least based on one account by the Congressional Research Service. (Coastlines can be notoriously difficult to measure, and counts do vary.)

Alaska’s state flag was designed by a 13-year-old.

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In 1926, the territory of Alaska held a design competition for a new flag. The winner — the Polaris star and Ursa Major (Big Dipper) constellation on a blue field — was created by a 13-year-old boy living in an orphanage. Alaska stuck with the flag when it became a state in 1959.

Alaska’s coastline borders three seas — the Beaufort, Bering, and Chukchi — along with the Pacific and Arctic oceans, and it rests in some of the most extreme climates in the world. The coasts themselves have been formed over millions of years by fault tectonics, volcanism, glaciation, fluvial processes, and sea level changes. Most of these beaches aren’t usually very balmy: The southeast section of Alaska’s coast is filled with rocky coasts and sheltered fjords, while in the north, sediment from rivers draining from the Brooks Range and the Canadian Rockies forms deltas. Although these rivers are often frozen, wind pushes sea ice along the shore during the coldest months. So if you’re looking for a place to swim, maybe stick to Key West — in the contiguous U.S., Florida has the most coastline of any state, with an estimated 1,350 miles.

Numbers Don't Lie

Numbers Don't Lie

Height (in feet) of the highest wave ever surfed by a human
86
People in the U.S. who live in counties located along the coast
127 million
Miles of coastline in New Hampshire, the least of any coastal state
13
Percentage of U.S. landmass that is Alaska
17%

______ has the most coastline of any country.

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Canada has the most coastline of any country.

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Alaska is home to 227 federally recognized Indigenous tribes, more than any other state in the U.S.

The U.S. federal government recognizes 574 tribes throughout the country — and 227 of those are in Alaska alone. (The Bureau of Indian Affairs recognizes an additional two.) In fact, nearly one in six Alaskans is considered Native American, which is the highest rate of any U.S. state. (By sheer numbers, California is home to the most Indigenous people overall.) Although the U.S. government has formally recognized Alaska’s 229 tribes, the state of Alaska didn’t follow suit until the summer of 2022, when Governor Mike Dunleavy passed legislation recognizing the tribes and their indelible contributions to the history and culture of Alaska.

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.

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In 1954, Sir Hugh Beaver, the managing director of Guinness, thought up a way to reduce pub disputes so bartenders could focus on pouring his company’s signature beers. He suspected that every bar could benefit from a book filled with verified facts and stats about subjects that might arise mid-conversation over a drink. Two events in particular prompted his decision: Earlier in the decade, he and fellow guests at a hunt in Ireland memorably argued about Europe’s fastest game bird, which they had no means of identifying. Then, on May 6, 1954, English athlete Roger Bannister became the first person to run a mile in less than four minutes, causing public interest in records-related news to surge. Norris McWhirter had served as the stadium announcer during Bannister’s historic run, and Beaver hired both him and his identical twin, Ross McWhirter — another sports journalist — to assemble The Guinness Book of World Records. At the time, the pair had already begun working at a London-based agency that supplied facts to newspapers and advertisers.

The U.S. is the third-largest market for Guinness beer.

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That claim belongs to Nigeria. The dark brew has been sold there since 1827, although in glass bottles rather than cans. The countries that drink more Guinness are the U.K. and Ireland.

The McWhirter twins spent about three months working feverishly on their 198-page compendium. Released in the U.K. on August 27, 1955, the book featured about 4,000 records, ranging from the world’s tallest man to the smallest pub. Eight pages of black-and-white photographs broke up the text, along with a few ink drawings. Although initially meant to be given out for free at bars to promote Guinness, the book became so popular that the company started selling it, soon to great success. To date, more than 150 million books from the series — eventually renamed Guinness World Records — have been purchased, educating readers in 40-plus languages. But the brand is no longer beverage-based: Diageo, the alcohol conglomerate that now owns Guinness, sold Guinness World Records in 2001, and it’s now owned by a Canadian conglomerate called the Jim Pattison Group.

Numbers Don't Lie

Numbers Don't Lie

Minimum Guinness World Records that NYC’s Ashrita Furman — the most prolific record-breaker — has set
600
Length (in years) of the lease Guinness’ founder signed to rent the company’s headquarters in 1759
9,000
Record applications in 2025
49,052
Estimated pints of Guinness lost every year to drinkers’ mustaches, according to a 2000 study
162,719

From 1976 to 1995, New York City’s iconic ______ Building was home to a Guinness World Records museum.

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From 1976 to 1995, New York City’s iconic Empire State Building was home to a Guinness World Records museum.

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Guinness prompted the Irish government to adjust the trademark of its coat of arms.

All Guinness bottles and cans share the same harp-shaped logo, a nod to a national treasure — a famed 14th-century harp — preserved inside the library of Trinity College Dublin. The harp has been incorporated into Guinness labels since 1862, and the beverage titan trademarked the design 14 years later, although it has been updated over time. A harp (a reference to the same instrument at Trinity College) has also been Ireland’s emblem since the Irish Free State was established in 1922, starring in its seal of state, coat of arms, and coins. In the early 1980s, Ireland’s office of the attorney general suggested attempting to trademark the harp under international intellectual property jurisdictions with the instrument facing in both directions, but the government had concerns that the move would elicit a lawsuit from Guinness, which is associated with a harp that has a left-sided straight edge. So since 1984, the official, nine-string Irish harp is always pictured with its straight edge to the right.

Jenna Marotta
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Jenna is a writer whose work has appeared in The New York Times, The Hollywood Reporter, and New York Magazine.

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Although the sky is blue throughout the year, it often looks like a richer blue in the fall and winter, especially at latitudes farther from the equator. Why? Well, the answer has to do with both electromagnetism and the biology of the human eye. As a refresher: All visible colors are tied to some wavelength along the electromagnetic spectrum. When sunlight enters Earth’s atmosphere, gas and dust particles reflect the shorter wavelengths of visible light (such as blue) more than longer wavelengths (such as red). That — and the sensitivity of the human eye to the color blue — is why the sky appears as a cool sapphire.

Boston is considered the U.S.’s fall foliage capital.

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It's a fib

While New England attracts legions of leaf-peepers every autumn, it’s the northern city of Stowe, Vermont, that’s widely regarded as the best place to view fall foliage. Some 850,000 people visit the small town every year in the summer and fall.

As the seasons progress, one part of this equation changes: the sun’s position. As the sun gets lower and lower in the sky during its annual journey back toward the equator (and eventually the Tropic of Capricorn), the angle of the sun’s light hitting the atmosphere causes even more blue light to scatter, while red and green light decrease. That causes the sky to turn an even richer blue. These blue skies are especially easy to see in much of North America as cooler temperatures mean less moisture (and therefore fewer clouds), giving you an uninterrupted view of that deep azure atmosphere.

Numbers Don't Lie

Numbers Don't Lie

Year Irving Berlin wrote the song “Blue Skies”
1926
Max length (in nanometers) of the electromagnetic wavelength our eyes perceive as blue
495
Percentage of U.S. citizens who prefer the color blue — the most of any color — according to one survey
31%
Year the phrase “blue devils” was first recorded; it eventually influenced the name of the “blues” genre
1756

The original name for the fall season was “______.”

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The original name for the fall season was “harvest.”

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When leaves change color, they’re revealing pigments that have been there all along.

The multihued splendor of fall foliage is one of the most indelible symbols of the season. Although this process is often described as leaves “changing color,” it might be better to say they’re showing off color that’s always been there. During the spring and summer, a tree’s leaves are green due to the busy work of photosynthesis, which produces the pigment chlorophyll. When trees prepare for the dark and cold months ahead, they stop producing chlorophyll, and as this green color recedes, pigments that have always been present in the leaves, such as carotenoids (orange and brown) and anthocyanins (red and purple), are finally able to shine through.

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.