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Given that the United States was born amid an anti-monarchical fervor, it’s fitting that the sole royal palace within its confines is located more than 4,700 miles from the nation’s capital. There, amid the high rises and palm trees of downtown Honolulu, stands Iolani Palace, the home of Hawaii’s 19th-century royal dynasty. 

King Kalākaua wrote Hawaii’s national anthem.

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A patron of the arts, the Merrie Monarch teamed with royal bandmaster Henry Berger in 1876 to compose “Hawai’i Pono’i,” a tribute to the kingdom’s founder, Kamehameha I.

After King David Kalākaua rose to power in 1874, he elected to tear down the deteriorating coral block building that housed his predecessors and erect an ostentatious new home in a style that reflected the grand palaces he had visited while touring Europe some years prior. The “Merrie Monarch” went through three architects to get the residence he craved, winding up with a concrete-facing brick structure marked by six towers and open-air verandas stretching around all sides. The interior featured the lavish Throne Room, State Dining Room, and Blue Room to entertain dignitaries, along with a massive koa wood staircase to the private chambers of the second floor. Additional luxuries like indoor plumbing and a telephone pushed the final bill into the neighborhood of $350,000 before the palace opened in 1879, and that was before electricity was installed in the late 1880s.

Unfortunately, this display of extravagance served Hawaii’s rulers for just over a decade. Kalākaua’s sister and successor, Lili’uokalani, was deposed in an 1893 coup orchestrated by American businessmen, and the palace became the offices of the provisional, territorial, and then state governments until 1969. Reopened to the public as a museum in 1978, Iolani Palace serves as a reminder of Hawaii’s days as a sovereign nation, as well as America’s complicated history with monarchies.

Numbers Don't Lie

Numbers Don't Lie

Monarchs who ruled Hawaii from 1782 to 1893
8
Height (in feet) reached by Iolani Palace’s central towers
76
Year in which Hawaii became the 50th U.S. state
1959
Volume (in cubic feet) covered by Italy’s Royal Palace of Caserta
70 million

Iolani Palace was constructed in an architectural style known as ______.

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Iolani Palace was constructed in an architectural style known as American Florentine.

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Other “palaces” remain in use in the U.S. as museums and historical sites.

Although they never served as the residence of a monarch, a few other American structures retain the title of “palace” as the former home of a colonial authority. The best known is Governor’s Palace of Colonial Williamsburg, which housed seven British-appointed governors in Virginia and another two American-elected ones before the original building burned to the ground in a fire in 1781. Tryon Palace in New Bern, North Carolina, opened its doors to just two royal governors and, coincidentally, was also destroyed in a fire, before being rebuilt after World War II. Farther west, the 400-plus-year-old Palace of the Governors in Santa Fe, New Mexico, is the oldest European settler-built public building still in use in the United States. And finally there’s the Spanish Governor’s Palace in Texas, the only surviving building of an 18th-century presidio that guarded the settlement of San Antonio, and likely the only government building that also variously functioned as a pawn shop, tire shop, and saloon until it was restored by the city in 1930.

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 ikrolevetc/ Shutterstock

If you’re one of the 54% of Americans who’d like to stop resetting the clock twice a year, it might be time to move to Arizona or Hawaii. The Grand Canyon and Aloha states don’t observe daylight saving time (except for the Navajo Nation in Arizona), meaning they don’t fall back in November or spring forward in March. Rather, they live in what’s surely a permanent state of bliss, never having to remember whether the latest clock change means they’re getting an hour less sleep the next night or an hour more; nor are they subject to drastic, overnight differences in what time the sun rises and sets.

Daylight saving time was implemented for farmers.

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This common misconception gets it completely wrong, as farmers and agricultural workers have largely been opposed to DST since its conception. The practice was originally implemented during World War I to save energy.

Though polls like the one cited above consistently show that Americans are tired of changing their clocks, making daylight saving time permanent is just as popular as ignoring it altogether — one poll showed 56% of respondents were in favor of the idea. The House passed a bill to do just that in July 2026, though the Sunshine Protection Act of 2025, as it’s called, has yet to move forward in the Senate. Long after Benjamin Franklin half-seriously proposed a form of it in 1784, DST was formally adopted in America as a wartime measure via the Standard Time Act of 1918. It was abolished in 1919, with Congress overriding a veto from Woodrow Wilson, but then became the law of the land on a federal level when Lyndon Johnson signed the Uniform Time Act on April 14, 1966. States retained the option of remaining on standard time — but only two were bold enough to do so.

Numbers Don't Lie

Numbers Don't Lie

Rough percentage of countries that observe daylight saving time
33%
U.S. territories that don’t observe daylight saving time
5
Area (in square miles) of Arizona
113,909
Area (in square miles) of Hawaii
10,970

U.S. time zones are overseen by the ______.

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U.S. time zones are overseen by the Department of Transportation.

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Phoenix, Arizona, is the most populous state capital.

Though it’s not always thought of as one of our major cities, Phoenix is the most populous state capital in the U.S. With a population of about 1.6 million, Phoenix is far ahead of Austin, which ranks second for most populous state capitals. Phoenix also ranks fifth overall in the country when it comes to largest cities, with the other four most populous cities — New York, Los Angeles, Chicago, and Houston — not being the seat of their respective state governments. Rounding out the top five capitals are Columbus, Ohio; Indianapolis, Indiana; and Denver, Colorado. On the opposite end of the spectrum is humble Montpelier, which is home to around 8,000 Vermonters.

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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No matter what face you carve into your Halloween pumpkin, it will probably be called the same thing: a jack-o’-lantern. But how did spooky illuminated squash get that name? Turns out, the term we use to describe glowing pumpkins comes from Stingy Jack, the main character in a centuries-old Irish myth. 

Pumpkins are vegetables.

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Despite often being considered a vegetable thanks to its savory flavor, the pumpkin is actually botanically a fruit. It’s all about how they grow; because pumpkins grow from a pollinated flower, just like sweeter fruits, they’re classified that way regardless of how we cook them.

Americans haven’t always carved pumpkins; it wasn’t until the mid-1800s that squash was used for holiday fun. About 200 years before, those celebrating the harvest season in Ireland made their own lanterns from turnips, beets, and other root vegetables as a way to ward off Stingy Jack, a phantom who roamed the countryside around the harvest. According to Irish lore, Stingy Jack (sometimes called Flakey Jack) was a swindler who took up drinking with the devil, though when the tab came due, he didn’t want to pay his share. After convincing the devil to turn into a coin, Jack trapped his drinking partner in his pocket, releasing him only with the agreement that Jack’s soul would stay free of the underworld. However, as in all folktales, there was a catch (and a warning about immoral behavior): At the end of his life, Jack’s trickster soul wasn’t accepted into heaven or hell, leaving him to wander the earth with naught but a coal (provided by the devil himself) inside a turnip-turned-lantern. By the story’s end, Stingy Jack became “Jack of the Lantern,” which eventually morphed into “Jack O’Lantern.”

Irish immigrants brought the Stingy Jack story to America, though the name and practice of jack-o’-lantern carving took some time to catch on. It particularly picked up following the Civil War, when a grief-struck nation became fascinated by spirits and ghost stories, and it’s a tradition that’s been a fixture of autumn in America ever since.

Numbers Don't Lie

Numbers Don't Lie

Days it takes to grow a pumpkin, from seed to harvest
130-160
Weight (in pounds) of the pumpkin used to carve the world’s heaviest jack-o’-lantern, in 2023
2,749
Record for the most lit jack-o’-lanterns on display, set in 2013 in Keene, New Hampshire
30,581
Pounds of pumpkins harvested in the U.S. in 2021
1.9 billion

More pumpkins are grown in ______ than any other U.S. state.

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More pumpkins are grown in Illinois than any other U.S. state.

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There’s a species of orange mushrooms that glow in the dark.

Not every jack-o’-lantern requires a candle for illumination. Enter the jack-o’-lantern mushroom, a common fungi known for its ability to glow in the dark. The bright orange and yellow mushrooms often appear in summer and fall, popping up in clusters at the bases of trees, along stumps, or at the site of buried and decaying wood. After dark, the funnel-shaped fungi show off their bioluminescence, which appears as a faint green glow. There are two related species with the same common name, coloring, and ability to glow: Omphalotus olivascens grows in Mexico and California, while Omphalotus illudens grows throughout eastern North America. Mycologists (aka fungi scientists) are unsure why jack-o’-lantern mushrooms are equipped with the ability to light up, though some believe their ability to do so attracts animals that help spread their spores. The glowing tends to stop after the mushrooms are picked, though there’s another reason jack-o’-lantern mushrooms are best left alone: They’re packed with a toxin that can cause severe stomachaches.

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 Brent Hofacker/ Shutterstock

Candy corn may be the most maligned confectionary — it’s rare that the tricolored treat ever tops the list of beloved Halloween candies. Yet somehow it returns with flair each fall, an unyielding symbol of the season. While the waxy, triangular kernels have essentially remained the same since their creation in the 1880s, one thing has changed about candy corn: its name. In its earliest years, candy corn was called “Chicken Feed,” a catchy name appealing to rural Americans during a time when nearly half the country’s population worked on farms.

Most corn grown in the U.S. isn’t meant to be eaten as a vegetable.

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Farmers in the U.S. plant around 90 million acres of corn each year, though most isn’t for human consumption. Just 1% of corn grown in the country is meant for table fare, with the remaining 99% used for livestock feed, ethanol production, plastics, and more.

Not much is known about candy corn’s origin, though credit for its creation often goes to the Wunderle Candy Company, a Philadelphia venture that first produced the candy during the 1880s. However, another manufacturer — the Goelitz Confectionary Company, which would grow into the modern Jelly Belly Candy Company — further popularized the treat around 1898, designing packaging featuring a rooster and the tagline “Something worth crowing for.” By then, the treat was called “candy corn.” At a time when most real corn was planted for animal feed, candy corn was a novelty play on the idea that corn could actually be enjoyable for humans.

Making the miniature kernels was a time- and labor-intensive process done entirely by hand. Workers called “runners” walked backward along a conveyor belt packed with cornstarch molds, lugging buckets filled with a hot, sugary slurry that slowly dripped out through a hole. Each pass contributed one of the candy’s iconic yellow, orange, and white layers, which cooled into shape. Today, the process is nearly entirely mechanized and much faster, allowing candy corn factories to produce about 9 billion of the kernels each fall, just in time for seasonal snacking.

Numbers Don't Lie

Numbers Don't Lie

Pounds of feed an egg-laying hen eats per day
.25
Pounds of candy the average American adult eats in one year
8
Percentage of Americans who say they eat candy corn tip-first
29%
Typical number of kernels on an ear of corn
800

______ has the most candy corn purchases per 1,000 households of any state.

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Kansas has the most candy corn purchases per 1,000 households of any state.

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Candy corn was once a Christmas treat.

It’s usually hard to find a bag of candy corn on store shelves before September rolls around, and the treat typically disappears right after Halloween, but it wasn’t always that way. For decades after its invention in the 1880s, candy corn was an everyday snack, available year-round as “penny candy” for purchase cheaply and in bulk. However, making the treat was laborious, so manufacturers often crafted it in large batches between March and November, creating a stockpile that flooded candy shops for the fall and winter holidays. During the 1920s, advertisers marketed the treat as a top candy for Christmas and New Year’s celebrations. That changed during the 1950s, when Halloween and trick-or-treating became more widespread. As the Halloween holiday became linked with candy, confectioners began advertising candy corn as the perfect October 31 treat, linking the kernels to autumn and eventually changing the time of year we nibble on the mellowcreme triangles.

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 Bildagentur Zoonar GmbH/ Shutterstock

Earth is far from the perfect “blue marble” we like to picture. In reality, our planet is filled with deep trenches, towering mountains, and centrifugal bulges that make its mass uneven across the globe — and that unequal distribution can really mess with gravity. One famous example is the Hudson Bay region in northeastern Canada, where gravity reaches some of its weakest levels in the entire world. These levels aren’t extraordinarily low — residents weigh only one-tenth of an ounce less than they would elsewhere — but it’s enough for scientists to take notice and wonder why this particular area experiences gravity differently. 

Hudson Bay is the farthest south penguins live year-round.

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Hudson Bay is a vital habitat for one arctic species — but it’s not penguins. Polar bears live year-round near James Bay, a body of water connected to the southern Hudson Bay. The Hudson Bay’s yearly freeze-up allows polar bears to hunt seals on the bay itself.

The force of gravity is calculated using mass and distance. To put it simply, the mass of the Earth, combined with our proximity to its surface, is why we feel gravity the way we do. This is also why astronauts experience lower gravity as they move farther away from the Earth’s surface. Because we experience the Hudson Bay anomaly while still on Earth, that must mean the area somehow has less mass. It turns out there’s not only one, but two reasons for this. The first is a process in the Earth’s mantle (found 60 to 124 miles beneath the planet’s surface) called convection, in which super-hot magma moves continuously in a circular motion, sinking and rising back up again — and pulling tectonic plates with it. One of these sinking currents occurs in the Hudson Bay region, and could account for an estimated 55% to 75% of its “missing” gravity. 

The second reason takes us back 20,000 years to the last ice age, when much of North America was covered by a nearly 2-mile-thick glacier called the Laurentide Ice Sheet. Its massive bulk, especially around Hudson Bay where the glacier formed huge domes, compressed rock into the Earth’s mantle and created a giant indent with less mass. Scientists have confirmed that gravity is slowly increasing in the area as the Earth rebounds (at about half-an-inch per year) from this glacial trauma, but residents of the Hudson Bay region will still experience some gravity-induced weight loss for the next 5,000 years or so.

Numbers Don't Lie

Numbers Don't Lie

Speed (in feet per second, squared) of gravity’s acceleration toward Earth
32
Year Henry Hudson explored what is now called Hudson Bay
1610
Percentage of gravity on Mars compared to Earth (150 lbs. on Earth = 57 lbs. on Mars)
38%
Height (in feet) of the Barnes Ice Cap, the last remnant of the Laurentide Ice Sheet
1,640

Hudson Bay is second in size only to the ______, the largest bay in the world.

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Hudson Bay is second in size only to the Bay of Bengal, the largest bay in the world.

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Gravity travels at the speed of light.

Traveling 186,000 miles a second, light takes only about eight minutes to traverse the 93 million miles between the sun and the Earth. It’s the fastest thing known to science — well, one of the fastest. Gravity also travels through space at the speed of light, as hypothesized by Albert Einstein’s general theory of relativity. However, gravity is much harder to measure than light, in part because it’s a much weaker force, and because scientists can’t just turn it on and off while scribbling notes. In 2003, nearly 90 years after Einstein first shared his grand theory, scientists from the National Radio Astronomy Observatory (NRAO) used a once-in-a-decade celestial alignment to measure the speed of gravity. As the massive bulk of Jupiter passed in front of a specific quasar (very bright young galaxies located very far away), scientists measured how the quasar’s radio waves bent around the gas giant. Because the amount of bending depended on how quickly gravity propagated around Jupiter, NRAO scientists could finally determine its speed. The fact that light and gravity move at the same speed means that if the sun were to instantly vanish, Earth would still enjoy about eight minutes of sunshine while orbiting around, well, nothing — before being slingshot into the cold vastness of space.

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 South_agency/ E via Getty Images

A grandson of Napoleon Bonaparte’s younger brother Jérôme, Charles Bonaparte lacked his famous relative’s ambition for world domination yet displayed a talent for visionary authority that might have impressed the Little Corporal. In the late 19th century, Charles Bonaparte, then a lawyer from Baltimore, came into the orbit of fast-rising New York politician Theodore Roosevelt through their shared interest in civil service reform. Bonaparte later became President Roosevelt’s secretary of the Navy and then attorney general, a position that thrust “Charlie the Crook Chaser” into the spotlight as a face of the administration’s trust-busting efforts. 

Walt Disney was an informant for the FBI.

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From 1940 until his death in 1966, Disney reportedly relayed information about Hollywood’s suspected communists and political subversives to the FBI, for which he was rewarded with permission to shoot “The Mickey Mouse Club” at the bureau’s Washington, D.C., office in 1956.

Behind the scenes, the attorney general fumed at the lack of an established investigative team within the Department of Justice, which often led to the borrowing of spare Secret Service agents from the Treasury Department for investigating cases that involved federal law. Congressional leaders also frowned on what they felt was becoming an overreach of the executive branch, and in May 1908, Congress passed a bill that halted the DOJ’s ability to commandeer Secret Service personnel. Seizing the opportunity, Bonaparte culled together a “special agent force” of 31 detectives, and on July 26, 1908, he issued an order that directed DOJ attorneys to refer investigative matters to his chief examiner, Stanley Finch.

Bonaparte’s oversight of this unit was short-lived, as he exited the federal government at the end of the Roosevelt administration in March 1909. Nevertheless, his special agent force remained in place under new Attorney General George Wickersham, who began referring to the group as the Bureau of Investigation. By 1935, the now-renamed Federal Bureau of Investigation was firmly embedded as a U.S. law-enforcement institution under director J. Edgar Hoover, another authoritarian presence who surely would have piqued the interest of the former French emperor.

Numbers Don't Lie

Numbers Don't Lie

Full-time FBI directors since the agency’s founding in 1908
13
Year the FBI debuted its 10 Most Wanted Fugitives list
1950
FBI field offices throughout the United States
55
Worldwide gross of the 2004 film “Napoleon Dynamite”
$46 million

The motto of the FBI is “______.”

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The motto of the FBI is “Fidelity, Bravery, Integrity.”

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Other descendants of the Bonaparte lineage have found success in science, the arts, and finance.

Like the FBI’s founding figure, other members of the Bonaparte family tree managed to forge their own distinguished careers in the outsized shadow of the esteemed military commander. The best known is Charles-Louis Napoléon Bonaparte, who became president of France in 1848 before taking a page from his uncle and claiming absolute power for 18 years as Emperor Napoleon III. Another nephew, Charles-Lucien Bonaparte, eschewed military glory to become a renowned expert on birds, as illustrated by his four-volume American Ornithology. More recently, René Auberjonois, a descendant of Napoleon’s sister Caroline, enjoyed a long run as a successful character actor in Hollywood, highlighted by roles in Benson and Star Trek: Deep Space Nine. And while it’s highly unlikely the French monarchy will be restored, the current head of the once-royal family, Napoleon’s great-great-great-nephew Jean-Christophe Napoleon Bonaparte, seems to be getting along just fine as the managing partner of a private equity firm.

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 Joe Doylem/ Alamy Stock Photo

Coincidentally, they both came into existence at roughly the same time, although their reasons for adopting the controversial punctuation differ as dramatically as their settings. The first, a village in southwestern England called Westward Ho!, sought to capitalize on the popularity of the identically named 1855 book by Charles Kingsley, who wrote lovingly of nearby Bideford. Founded as a vacation resort in the 1860s, the hamlet sprung up around the Westward Ho! Hotel, and remains a notable tourist destination thanks to its scenic coastline and famed Pebble Ridge.

German correspondence includes a salutation line that ends with an exclamation mark.

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Although the comma has become more commonplace, an old-fashioned greeting such as “Lieber Friedrich!” (Dear Friedrich!) can still be seen atop the similarly old-fashioned written letter in Germany.

The second place, a town in southern Quebec called Saint-Louis-du-Ha! Ha!, isn’t exactly a bustling tourist destination, although early explorers may have been happy to refresh themselves at nearby Lake Temiscouata. According to the Commission de Toponymie du Québec, the archaic French term “le haha” indicates an unexpected obstacle or a dead-end, likely referring to the lake’s sharp change of direction. That doesn’t explain the distinct punctuation in the name, though — no one’s quite sure how or why that started. But no matter; this unassuming community, established in 1860 as a Catholic mission, has garnered an extra boost of attention since being honored for its double exclamation marks by Guinness World Records in 2018. 

Honorable mention goes to the southwestern Ohio city of Hamilton, which became known as Hamilton! following a city council vote in May 1986. While the announcement drew plenty of pre-internet buzz, the United States Board on Geographic Names and mapmaker Rand McNally & Company refused to play along. Hamilton! officials nevertheless pressed forward with duly punctuated city seals, letterhead, signs, and the like for some time, although the federally unrecognized notation had disappeared from existence by the time a city clerk undertook a short-lived attempt to revive it in 2020.

Numbers Don't Lie

Numbers Don't Lie

Words in the full title of the book “Westward Ho!”
36
Population of Saint-Louis-du-Ha! Ha! in 2016
1,292
Exclamation marks used to indicate a brilliant move in chess annotation
2
Year the exclamation point got its own space on the keyboard
1970

A punctuation mark that combines an exclamation point and a question mark is called an ______.

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A punctuation mark that combines an exclamation point and a question mark is called an interrobang.

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A celebrated comic book writer became known for his exclamation mark-punctuated middle initial.

Were you to leaf through an old X-Men or Spider-Man comic, it wouldn’t take long to notice the proliferation of exclamation marks in the dialogue bubbles. That had as much to do with the exaggerated scenarios portrayed in the storylines as it did with the reality of printing on cheap pulp paper, which left a tiny period impossible to see at times. In the early 1970s, new DC Comics writer Elliot S. Maggin quickly adjusted to placing an exclamation mark where a period usually went, to the point where he unwittingly typed Elliot S! Maggin on a Superman script. Intrigued, editor Julie Schwartz subsequently issued an order to the rest of the company that any mention of Maggin’s name should thereby be “punctuated with an exclamation mark rather than a period from now on until eternity.” Maggin went on to earn industry acclaim for his work on Superman over the next decade-plus, and he continues to sign off with the S! well after leaving the hyperbole of comics behind to pursue other careers in writing, teaching, and politics.

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 HPuschmann/ iStock

The history of technology is filled with happy accidents. Penicillin, Popsicles, and Velcro? All accidents. But perhaps the scientific stroke of luck that most influences our day-to-day domestic life is the invention of the microwave oven. Today, 90% of American homes have a microwave, according to the U.S. Bureau of Labor Statistics, but before World War II, no such device — or even an inkling of one — existed. 

Chocolate originated in what is now modern-day Belgium.

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Although Belgium is now known for chocolate, the story of the sweet stuff begins in Mexico. Around 1900 BCE, the Mokaya, a pre-Olmec civilization, was likely the first to turn the cacao plant into chocolate. However, they consumed it as a drink — chocolate bars arrived much later.

During the war, Allied forces gained a significant tactical advantage by deploying the world’s first true radar system. The success of this system increased research into microwaves and the magnetrons (a type of electron tube) that generate them.

One day circa 1946, Percy Spencer, an engineer and all-around magnetron expert, was working at the aerospace and defense company Raytheon when he stepped in front of an active radar set. To his surprise, microwaves produced from the radar melted a chocolate bar (or by some accounts, a peanut cluster bar) in his pocket. After getting over his shock — and presumably cleaning up — Spencer conducted a few more experiments using eggs and popcorn kernels, and he realized that microwaves could be used to cook a variety of foods. Raytheon patented the invention a short time later, and by 1947, the company had released its first microwave oven. It took decades for the technology to improve, and prices to drop, before microwaves were affordable for the average consumer, but soon enough they grew into one of the most ubiquitous appliances in today’s kitchens.

Numbers Don't Lie

Numbers Don't Lie

Number of microwaves sold worldwide every year
30 million
Year microwave popcorn first hit supermarket shelves
1981
Number of cacao beans it takes to make 1 pound of chocolate
400
Frequency (in megahertz) at which microwave ovens operate
2,450

The first microwave oven was called the ______ and weighed 750 pounds.

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The first microwave oven was called the RadaRange and weighed 750 pounds.

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The discovery of evidence for the big bang was also an accident.

In 1964 at Bell Labs outside Holmdel, New Jersey, radio astronomers Arno Penzias and Robert Wilson were frustrated with their antenna. The sensitive equipment was picking up a persistent buzzing noise that the pair first thought might be coming from the machine itself, nearby New York City, or even pigeons nesting in the antenna. However, once every explanation appeared to be accounted for, the two astronomers still detected the hum no matter where they pointed the antenna in the sky. After speaking with astronomers at Princeton University, the duo realized that they had actually detected the cosmic microwave background, which is leftover radiation from the big bang and evidence for the very beginning of the universe some 13.8 billion years ago. Fourteen years later, Penzias and Wilson were awarded the Nobel Prize in physics for their groundbreaking — and serendipitous — discovery.

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 Magic mine/ Shutterstock

From the automatic tasks of regulating breathing and blood pressure to the voluntary efforts needed for muscle movement, the central nervous system puts in a lot of work to maintain the complex mechanisms of the human body. Pace is crucial to keep this system running smoothly — which is why some signals from our body’s command centers can reach a speed of 268 miles per hour. 

People use only 10% of their brains.

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Although this concept is a popular “fact” thrown out in movies and TV shows, people tend to use the entirety of their brains over the course of a day.

In a nutshell, nerve cells in the brain and spinal cord send information through branching nerve fibers known as axons, which release chemicals across microscopic gaps to be picked up by other cells and synthesized by the appropriate areas of the body. The speed of this process varies according to the size and properties of the nerve fiber; bulky A-alpha axons, which can be 20 micrometers in diameter, have the bandwidth to generate the fastest impulses. Additionally, gaps along axons that are covered by a sheath of fats and protein, known as myelin, contain positive sodium ions that keep signals charged for rapid transmission.

So which bodily act necessitates the thickest channels to conduct information at speeds approaching those of the world’s fastest cars? That would be the delicate balance required for proprioception, our ability to sense the movement and positioning of body parts without looking. At the other end of the spectrum are the unmyelinated fibers that relay pain signals at a near-crawl of 1 mile per hour — evidence that our central nervous systems at least attempt to cushion the blow when serving as the bearer of bad news.

Numbers Don't Lie

Numbers Don't Lie

Weight (in pounds) of the adult human brain
3
Percentage of the brain made up of fat
60%
Cells in the average male brain
171 billion
Books in John D. Fitzgerald’s “The Great Brain” series
8

The chemical messengers that carry signals from nerve cells to other cells are called ______.

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The chemical messengers that carry signals from nerve cells to other cells are called neurotransmitters.

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Multiple sclerosis destroys the fiber coating that aids brain-signal transmission.

Myelin does more than facilitate the high-speed transport of brain signals, as it also provides a layer of insulation for the fibers that execute this crucial process. When myelin is damaged, the central nervous system stimulates the production of cells called oligodendrocytes to repair the harm. However, neurological diseases such as multiple sclerosis attack both the myelin and the oligodendrocyte-producing cells, resulting in disrupted signals and telltale MS signs such as impaired vision and speech. To this point, the discovery of a clear method to undo nerve cell damage has largely eluded medical researchers, although some recent trials have pointed to a potential breakthrough. Among them, treatments involving the over-the-counter antihistamine clemastine have produced evidence of myelin regeneration, providing hope that a cure can be found in the lifetime of at least some of the 3.1 million people now living with MS.

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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Like a lot of strange happenings, it was first noticed in the 1960s: a small seismic pulse, large enough to register on seismological instruments but small enough to go otherwise unnoticed, occurring every 26 seconds. Jack Oliver, a researcher at the Lamont-Doherty Geological Observatory, documented the “microseism” and sussed out that it was emanating from somewhere “in the southern or equatorial Atlantic Ocean.” Not until 2005 was it determined that the pulse’s true origin was in the Gulf of Guinea, just off Africa’s western coast, but to this day, scientists still don’t know something just as important — why it’s happening in the first place.

The Richter scale has no upper limit.

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It's a fact

Not that anyone is in a rush to confirm this theory, but the Richter scale — which measures the size of earthquakes — doesn’t max out at 10, 20, or any other number. Thankfully, most earthquakes are so small as to not even register.

There are theories, of course, ranging from volcanic activity to waves, but still no consensus. There does happen to be a volcano on the island of São Tomé in the Gulf of Guinea near the pulse’s origin point, though — not to mention another microseism linked to the volcano Mount Aso in Japan, which has made that particular explanation more popular in recent years. That said, there’s no way of knowing when (or even if) we’ll learn the why of this phenomenon. But one thing’s for sure: better a microseism than a macroseism.

Numbers Don't Lie

Numbers Don't Lie

Detectable earthquakes every year
500,000
Highest magnitude ever recorded on the Richter scale
9.5
Known major tectonic plates
7-8
Year pro wrestler Earthquake made his WWF debut
1989

Tori Amos’ 1992 debut solo album was titled “______.”

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Tori Amos’ 1992 debut solo album was titled “Little Earthquakes.”

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California isn’t the most earthquake-prone state.

That would be Alaska, which is not just the most earthquake-prone state in the country but also one of the most seismically active areas in the world, with 11% of all earthquakes occurring there. That’s because Alaska is part of the Ring of Fire, a nearly 25,000-mile-long area along the Pacific Ocean, characterized by volcanic and seismic activity. The second-largest earthquake ever recorded (a staggering 9.2 on the Richter scale) took place in the Prince William Sound region there on March 27, 1964, lasting about 4.5 minutes and causing a tsunami that was felt as far away as California. Beyond that, three of the eight largest recorded earthquakes in the world have also been in Alaska, as were seven of the 10 largest in America. It has experienced an average of one magnitude 7 to 8 earthquake every year since 1900 and one “great” earthquake (magnitude 8 or higher) every 13 years.

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.