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From flower boxes in apartment windows to vast apple orchards, gardens take all kinds of forms. Plants look pretty, sure, but they also feed us, shelter us, and clean the air around us. Gardening isn’t just about the end result, either — getting your hands dirty can seriously boost your mood.

What’s actually living in your soil? Are you eating a rose right now? Did you neglect your lawn and accidentally grow a vegetable garden? These seven facts about gardening cover a lot of ground.

Closeup of pink roses blooming in Summer.
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Some of Your Favorite Fruits Are Probably Roses

The rose family, Rosaceae, includes many, many cousins, including a lot of common fruit. Apples, pears, peaches, cherries, nectarines, plums, and even almonds are Rosaceae, but in a different genus than the plants we generally think of as roses. Brambleberries, such as raspberries and blackberries, are more closely related. (Roses, by the way, are also edible.)

Botanists reclassified apples and plums as roses in the early 1900s, which inspired a Robert Frost poem in 1927, including the lines: “The dear only knows/what will next prove a rose.”

A field of sunflowers against the blue sky.
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One Sunflower Is Actually Thousands of Flowers

Sunflowers were first domesticated from wild plants in America around 1000 BCE and are now common features in front yards. Their defining feature is their gigantic blossoms, or heads, which are 2 to 4 inches wide in the wild and much, much bigger in many home gardens. The widest on record is more than 32 inches in diameter.

These heads may look like single giant flowers, but they’re actually thousands of tiny florets clustered together. What appear to be petals are actually various types of flowers. Daisies are in the same family, and have a really similar structure: a cluster of many disk florets at the center with a burst of ray florets along the perimeter.

A handful of garden soil.
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There Can Be More Microbes in a Teaspoon of Soil Than There Are People on Earth

Planet Earth has a surface area of 197 million square miles, with 8 billion human beings living on it — but just a teaspoon of garden soil can have up to 10 billion microbes. Bacteria form the largest population of these microbes, but there are also plenty of fungi, algae, one-celled animals called protozoa, and small worms called nematodes. Bigger creatures such as earthworms and arthropods are part of the soil, too. This biome generates nutrients, like nitrogen and phosphorus, that plants need to survive and grow.

Young bamboo sprouts at agriculture bamboo farm.
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Bamboo Grows Really, Really Fast

Many home gardeners turn to bamboo because it thrives easily and makes a great privacy screen, but it can be quick to get you in over your head. Bamboo is one of the fastest-growing plants in the world, and some varieties, once established, can grow 45 inches — taller than most human toddlers — in a single day.

Bamboo shoots are connected underground by a rhizome, a growing underground stem, so they don’t need to grow their own leaves for a while; they get their nutrients from the other shoots in the chain. They also don’t get thicker, so they can use all their energy getting taller.

Because bamboo grows and proliferates so quickly, it can be wildly invasive in the United States. Be careful where and how you plant it; some gardeners opt to grow it in pots.

Gardener removing weeds next to dandelions.
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Many Common Weeds Are Edible

What counts as a “weed” is in the eye of the beholder, and many plants that some view as unwelcome are actually healthy and tasty snacks. Dandelions are one of the most common weeds in American gardens, but they’re incredibly nutrient-dense. The leaves can be sauteed or used in a salad, and the roots can be made into tea or even roasted and eaten. Even stinging nettles are edible (and nutritious) once they’re cooked.

Other edible weeds include lamb’s quarters, shepherd’s purse, and chickweed. If you want to bring these plants into your kitchen, though, first make sure they haven’t been sprayed with any herbicide.

Headphones cover on Cobra Bird's nest fern plant pot.
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Sound Affects Plants

You may have heard that talking to plants or playing music nearby helps them grow. While there’s no specific evidence to show that plants love having conversations with you (sorry), plants do respond to sound. In one study, sound as low as 70 decibels (about as loud as a dishwasher or a moderately loud conversation) affected two genes involved in how plants respond to light, although it’s not clear exactly how that influences the plant. Another study found that sound waves could increase the yield of certain crops, such as cotton and cucumbers. There are theories that sound could promote germination and growth by regulating certain plant hormones, that it might induce defense responses against pathogens (again via hormones), that it could trigger higher stress tolerance for plants, and more.

The plants could be responding to sound vibration because they evolved to respond to vibrations caused by wind — which can signal a plant to grow shorter and thicker to better respond to growing conditions.

Carrots of different varieties with green tops.
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Carrots Come in Many Colors

Carrots are perhaps the most iconic of the orange vegetables, but orange carrots are a relatively recent phenomenon. Early carrots were almost all purple and yellow — like you see in a bag of rainbow carrots — according to records dating back to around 900 CE. Orange carrots started showing up in European art in the early 16th century, and were probably naturally cultivated, despite a persistent rumor that Dutch farmers deliberately bred them.

Interesting Facts
Editorial

Interesting Facts writers have been seen in Popular Mechanics, Mental Floss, A+E Networks, and more. They’re fascinated by history, science, food, culture, and the world around them.

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On March 1, 1872, President Ulysses S. Grant designated Yellowstone National Park the country’s first national park. In the 150 years following, 62 more national parks have joined the fold, in addition to the hundreds of other sites under the purview of the U.S. National Park Service today, including national historic sites, battlefields, lakeshores, monuments, preserves, and trails.

Once called “America’s Best Idea,” national parks have preserved wide swaths of the country’s most magnificent scenery and geological history for millions to enjoy every year — from open prairie to mountain ranges, unique rock formations, deserted island beaches, and Arctic forests. But as popular as these parks are, many visitors are unaware of the surprising features they contain within their borders.

Sunrise Landscape at Great Smoky Mountains National Park.
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Great Smoky Mountains Is the Most Visited National Park in the U.S.

Straddling the border between North Carolina and Tennessee, Great Smoky Mountains National Park attracted 14.1 million visitors in 2021. For comparison, that is nearly three times the number of people who visited the second-most popular park, Utah’s Zion National Park, which drew a still-respectable 5 million visitors. Park officials estimate that since Great Smoky Mountains National Park opened in 1934, more than 560 million people have enjoyed all that it has to offer. Part of the reason may be that there is no entry fee to the park, and it never closes (although some roads may be closed during severe weather). In addition to countless opportunities for hiking and nature viewing, the park now allows fishing in all of its approximately 2,900 miles of waterways.

Death Valley National Park Is the Hottest Place on Earth

It might not come as much of a surprise given its name, but Death Valley gets hot — extremely hot. The national park is the home to the hottest ever recorded temperature on Earth, a 134.1-degree-Fahrenheit reading taken in Furnace Creek Ranch, California. But it doesn’t always get that hot. The average temperature during summer is a still-sweltering 115 degrees, but temperatures regularly exceed 120 degrees. According to the National Park Service, the hot weather can be attributed to the valley’s low depths, high walls, and lack of shade cover. Since there is little plant life to absorb the heat, the sun rays radiate throughout the valley floor and are absorbed by rocks. When night falls, the warm air rises but is trapped by the high mountain walls. If you want to visit Death Valley in the cooler months, December and January are a safe bet, with daily averages maxing out in the mid-60s.

A group of tourists gathered around Old Faithful at Yellowstone National Park.
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Yellowstone National Park Is Home to a Supervolcano

Crowds flock to Yellowstone National Park (located mostly in Wyoming, but with parts in Idaho and Montana) to see the famous eruptions of Old Faithful. However, the park is home to a whopping 10,000-plus hydrothermal features, including 500 geysers — which scientists estimate is about half of the world’s geysers. But perhaps the park’s most impressive geological feature is a supervolcano, a type of volcano that’s thousands of times more powerful than a regular volcano. Approximately 2 million years ago, a massive volcanic eruption triggered a push of magma to Earth’s surface through a thin spot in the crust at the present-day location of Yellowstone. Much of the continent was left covered in ash. Hot lava still ripples below the ground throughout the park today, its heat causing the constant bubbling of springs and mud. But worry not: The last time the supervolcano erupted was 664,000 years ago, and some scientists think it may never happen again.

The World’s Longest Known Cave System Is in Mammoth Cave National Park

The world’s longest cave system winds its way beneath much of western Kentucky, and, fortunately, a portion of it is open to visitors. To date, more than 412 miles of Mammoth Cave have been mapped, but experts say it may well extend more than 1,000 miles in total. Several new miles of the cave system are discovered each year. The cave structure is particularly stable thanks to a layer of sandstone that caps the limestone beneath. There are numerous impressive cave structures on display, including stalactites, stalagmites, and a type of gypsum formation called “gypsum flowers.” The dry, cool environment of Mammoth Cave also makes it an ideal habitat for several endangered forms of bat and cave shrimp.

Road leading to snow covered Mt Denali at Denali National Park in Alaska.
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Denali National Park Contains the Highest Elevation Point in North America

Previously known as Mount McKinley, the namesake of Alaska’s Denali National Park soars 20,320 feet above sea level, making it the highest point in North America. Upwards of 600,000 people visit Denali annually to see the majestic mountain views. In fact, the three highest points in U.S. national parks are all located in Alaska: In addition to Denali, Mount Saint Elias reaches 18,008 feet, and Mount Fairweather stands at 15,325 feet. Outside of Alaska, the highest point in a national park is California’s Mount Whitney, which towers 14,498 feet above sea level in Sequoia National Park.

Hawai’i Volcanoes National Park Is Home to the World’s Most Active Volcano

The Hawaiian archipelago, made up of 137 islands, is a hotbed of volcanic activity. The islands formed as the result of eruptions due to the constant motion of the Pacific plate beneath the ocean. Located on the Big Island in Hawai’i Volcanoes National Park, Mount Kilauea is the world’s most active volcano mass — it has been erupting continuously since 1983. Molten lava from the eruption pours down the sides, eventually cooling to add to the landmass of the island. But some lava streams flow directly into the sea, creating impressive vapor clouds when the two meet. Kilauea is also known as the home of Pele, the Hawaiian goddess of fire and volcanoes.

A woman walks through North Window Arch with Turret Arch in the background.
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Arches National Park Has More Natural Arches Than Any Other Place on Earth

Vibrant red-tinged rocks frame a brilliant blue sky in many an Instagram photo taken by visitors to Utah’s Arches National Park, home to more than 2,000 natural sandstone arches — more than in any other spot on Earth. Arches, bridges, and windows dot the desert, providing geologists with a fascinating view of millennia gone by. Over a period of about 65 million years, the area’s geologic plates shifted, and wind and rain also played a hand in shaping the rock into nature’s own sculpture garden. Arches grow and widen until they eventually collapse, leaving columns in their stead. As with many of these park features, in another million years, the landscape may be completely different than what we see today.

Gateway Arch National Park Is the Country’s Smallest National Park

Named after a human-made arch rather than a natural one, Gateway Arch National Park in St. Louis is the smallest of the country’s 63 national parks, covering just over 90 acres. It’s also one of the country’s few urban national parks and includes green forestland, riverfront access, and five miles of recreational trails that are home to diverse native plant species. Of course, the centerpiece of the park is the 630-foot-high (and 630-foot-wide) Gateway Arch — the tallest human-made monument in the U.S. — which stands against the St. Louis skyline.

Theodore Roosevelt National Park sign.
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Theodore Roosevelt National Park Is the Only National Park Named After a Person

The 26th President’s namesake park is located in the North Dakota badlands, and got its name because Roosevelt had a residence there. When Roosevelt served as President from 1901 to 1909, he established more than 200 national parks, forests, wildlife reserves, and monuments across 230 million acres of public land, earning him the nickname the “conservationist President.” Visited by 600,000 people each year, Theodore Roosevelt National Park covers more than 70,000 acres with the Little Missouri River flowing through it. It is filled with wildlife and scenic vistas, including the famous Painted Canyon, where the former President’s cabin is located.

North Cascades National Park Has More Glaciers Than Anywhere in the Continental U.S.

Located about 100 miles north of Seattle, Washington’s North Cascades National Park is home to a mountain range that’s often referred to as “the American Alps” for its rugged, glacier-capped peaks. In fact, the area is home to more than 300 glaciers — more than any other U.S. national park outside of Alaska. It’s one of the snowiest places on the planet, and all that snow accumulates and compacts into glacial ice. Overall, however, the U.S. national park that has the most glaciers is Alaska’s Wrangell St. Elias National Park and Preserve. Covering 13.2 million acres, it’s also the largest national park in the country and home to some of the biggest glaciers in the world.

Tourist admiring Square Tower House at Mesa Verde National Park.
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Mesa Verde National Park Was One of the World’s First UNESCO Sites

With 5,000 known archaeological sites, 600 of which are cliff dwellings made of sandstone and mud mortar, Mesa Verde National Park offers a fascinating glimpse into the lives of the Ancestral Pueblo people, who lived in the southwestern Colorado area from around 550 to 1300. Among the most impressive structures are the Cliff Palace, Balcony House, and Square Tower House, plus various relics like farming terraces, field houses, shrines, and rock art. The area was designated a national park in 1906, and in 1978, it earned a spot among an elite group of only 12 places around the world named the first UNESCO World Heritage Sites. Mesa Verde was one of two sites in the U.S. — the other was another national park, Yellowstone.

There’s Only One U.S. National Park in the Southern Hemisphere

Spanning rainforests, volcanoes, beaches, and coral reefs on three islands in the South Pacific, the National Park of American Samoa is the southernmost park of any U.S. territory — and the only national park south of the equator. The park was established in 1988 after environmentalists proposed a bill to preserve the hundreds of plant species in the rainforest and to save the habitat of the endangered Flying fox (a fruit bat). Covering 13,500 acres on the islands of Ofu, Tutuila, and Ta’ū, the park is a spectacular preserve for hikers and snorkelers. And its very existence is a reflection of Polynesia’s oldest culture and its deep-rooted respect for the island environment — the name Samoa translates to “sacred earth.”

Interesting Facts
Editorial

Interesting Facts writers have been seen in Popular Mechanics, Mental Floss, A+E Networks, and more. They’re fascinated by history, science, food, culture, and the world around them.

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The Wild West — sometimes called by the more subdued name of the Old West — is the star of many romanticized American stories. Tales of rebellious bands of outlaws, small-town sheriffs, and brave cowboys have made indelible marks on the cultural landscape, from spaghetti Western films to country music ballads. A well-made cowboy hat is an instantly recognizable symbol of ruggedness. One of the most popular video games of all time is about the Oregon Trail. Old-timey celebrities of the era are still household names — among them Wild Bill Hickok, Calamity Jane, Wyatt Earp, Annie Oakley, and Billy the Kid.

The stories below go deeper, from unsung heroes to forgotten tragedies. Which famous mail delivery service was a flash in the pan? What iconic American animal was almost driven to complete extinction? What stomach-churning flavors could you expect to find in an Old West saloon?

Here are six interesting facts you may not know about the Wild West.

Pony Express rider leaving St. Joseph, MO.
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Most People Didn’t Use the Pony Express

The Pony Express mail service — which used horses and riders in a continuous relay to deliver mail — is one of the most iconic operations of the era, but it wasn’t part of everyday life for most people in the Old West. The service was expensive (around $130 in today’s dollars for just a half ounce of mail), and there were cheaper alternatives, like mail sent by stagecoach or ship. Most of the clientele were big businesses, newspapers, and government entities, who all regularly dealt with time-sensitive documents. Even those dispatches were printed on tissue-thin paper to save money, though.

The Pony Express also wasn’t around for that long. It lasted just a year and a half, between April 1860 and October 1861, when the Western Union Transcontinental Telegraph Line introduced a safer, much faster, more reliable way to deliver urgent messages. Still, for its brief existence, the Express bridged an important communications gap, delivering around 35,000 pieces of mail overall.

Riverboats in the port of Sacramento in California, a mining town founded during the Gold Rush.
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Some Gold Rush Prospectors Sailed Around South America to Get to the West

When you picture the pioneers and prospectors of the Old West, you probably imagine long journeys by stagecoach, horse, or wagon train. But at the beginning of the California Gold Rush, before major trails were established, travelers from the American East Coast actually had a harder time getting to California than those seeking their fortunes from China and Australia. While the latter enjoyed travel on well-worn trade routes to reach California, most early American Forty-Niners took an arduous 17,000-mile-long sea voyage all the way around Cape Horn, very near the southern edge of South America. It’s a dangerous patch of ocean to sail through, and was even more treacherous if the ship took a shortcut through the narrow Strait of Magellan. The full voyage often took five months to complete (and could take up to eight months). All told, around 40,000 travelers arrived in California by sea in 1849, most via what’s now known as San Francisco.

Gauchos breaking in a young horse.
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Cowboys Were More Diverse Than in the Movies

The image of the gunslinging, freewheeling cowboy — strictly, a man on horseback that drives cattle to and from pasture — is burned into the American cultural experience, but it’s missing a few historic truths. For example: As many as one out of four cowboys in the Wild West were Black.

When wealthy American enslavers moved to Texas (first part of Spain, then Mexico) in the early 1800s to start cattle ranches, they brought enslaved people with them in droves. Even in 1825, when Texas was still part of anti-slavery Mexico, enslaved folks made up around 25% of the settler population. These ranch owners, many of whom eventually fought for the Confederacy in the Civil War, relied on slave labor to keep their cattle contained. After the Emancipation Proclamation in 1863 made slavery illegal (Texas had joined the U.S. in 1845), these ranchers started having a lot of trouble with runaway cattle.

Recently freed Black Americans who had been enslaved on cattle ranches were highly skilled in wrangling, and suddenly, paid cowboys were in extremely high demand — so many of them took up the cowboy trade. While they faced high levels of discrimination at the ranches, in towns, and on the plains alike, they forged tight bonds with their white and Mexican colleagues in cowboy crews.

Whiskey in a glass with ice cubes.
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Whiskey in the Old West Was Not Very Good

High-end whiskey brands often use Old West imagery to sell their products, but if they were really selling what the cowboys drank, you’d definitely want to save your money. Absent copyright laws and regulation, the quality of “whiskey” varied wildly from saloon to saloon. Something labeled as an aged, straight Kentucky bourbon could actually just be neutral grain alcohol, often distilled from low-grade molasses, re-distilled with a variety of additives that could include burnt sugar, glycerine, prune juice, iodine, tobacco, or even sulfuric acid. Of course, good whiskey existed — but the Wild West is not known for being particularly refined.

In the late 19th century, whiskey producers that did not want their name slapped on bottles of boozy tobacco juice made some attempts to self-regulate, and separating real bourbon from the fake stuff led to the “bottled in bond” label that manufacturers still use today. More labeling laws came with the 1906 Pure Food and Drugs Act.

Black Bart, stagecoach robber active from 1875-83.
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One “Gentleman Outlaw” Left Poetry After Robberies

In his ordinary life, Charles Boles was a well-dressed businessman, sporting a silky white mustache and living in luxury. But he didn’t earn his fortune in the mining business, as he claimed to his San Francisco social circles. In reality, he was robbing stagecoaches, which he took up in middle age. He may have ripped his moniker, Black Bart, from the pages of a thriller about, appropriately, a stagecoach robber, focusing exclusively on Wells Fargo routes — and covering up his well-groomed visage with flour sacks.

Keeping with the literary theme, he wrote poetry to leave behind at the scene, although he did so in only two of at least 28 suspected robberies. “I’ve labored long and hard for bread/For honor and for riches,” reads his best-known one, “But on my corns too long you’ve tred/You fine haired Sons of B****s.”

His gentlemanly life would ultimately be his undoing. During his last robbery in 1883, he was injured and attempted to flee the scene. In the process, he dropped a handkerchief marked with the number he was supposed to use to pick up his laundry, which Pinkerton detectives used to trace him. Ultimately, he was convicted of just one robbery, and served four years in San Quentin before slipping into obscurity.

Herds of bison near Lake Jessie, North Dakota.
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Buffaloes Were Almost Driven to Extinction

In the mid-19th century, the wild bison — popularly known as buffalo — population was still in the tens of millions; by the end of the 19th century, it had dropped to only around 300. But it wasn’t just increased hunting that spelled the doom of this once-wild species.

During this era of rapid westward expansion, the American government ratified around 400 treaties with Plains Indians… only to break the vast majority of them during the fervor of the gold rush, the aggressive pursuit of Manifest Destiny, and railroad construction. These Indigenous tribes, including the Lakota and the Sioux, had become fiercely protective of their land, and the United States government began attempting to confine them to reservations through a storm of military conflicts. Some government officials started promoting mass destruction of buffalo as a way to leave tribes starving and desperate. The craze quickly spread from the military to private companies and citizens. Trappers and adventurers slaughtered the animals by the thousands. Trains would even stop to let passengers shoot bison from the windows. Some notorious buffalo hunters became celebrities — for example, Buffalo Bill, notorious for his anti-Native American sentiment at the time, got his name from his bison body count.

The damage had been done, both to Indigenous tribes and the wild buffalo population. However, those 300 buffalo were hiding out in Yellowstone National Park, and Congress voted to protect them on park lands. Today, the vast majority of bison are bred as livestock, but thousands of wild buffalo still make their home in Yellowstone.

Sarah Anne Lloyd
Writer

Sarah Anne Lloyd is a freelance writer whose work covers a bit of everything, including politics, design, the environment, and yoga. Her work has appeared in Curbed, the Seattle Times, the Stranger, the Verge, and others.

Original photo by Shawshots/ Alamy Stock Photo

Few entertainers have achieved greater acclaim than the King of Rock ’n’ Roll, Elvis Aaron Presley. From his humble beginnings in Tupelo, Mississippi, to his lavish later years spent at Graceland, Elvis lived a fascinating life, and his performances and songs remain almost as beloved today as when they were first recorded. In honor of the King’s birthday on January 8, we’ve compiled six facts about one of the most renowned musicians of the 20th century.

Rock and roll musician Elvis Presley performing on the Elvis comeback TV special.
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Elvis Never Performed Outside of North America

Despite being a global sensation — an estimated 40% of his record sales occurred internationally — Elvis never performed outside of North America. In fact, the only time he ever held a show not on U.S. soil was during a series of three Canadian concerts, in Ottawa, Toronto, and Vancouver, all in 1957.

His tendency to stick stateside had little to do with his rumored fear of flying, however, as he still traveled by plane to perform in Hawaii in 1973. The most widely accepted (if still unconfirmed) reason for the lack of foreign gigs has to do with his manager, Colonel Tom Parker. Parker was born in the Netherlands, and reportedly feared that his status as an undocumented immigrant would make returning to the United States impossible. That may have been why he only booked Elvis on North American concerts.

Elvis Presley as a child with blonde hair.
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Elvis Was a Natural Blond and Used Shoe Polish as Hair Dye

You’d be hard-pressed to find evidence of Elvis’ natural blond hairstyle, as only one known photo exists, hanging on the wall of Graceland. From a young age, Elvis dyed his hair jet black with shoe polish — which was cheaper than hair dye — in an effort to make his blue eyes stand out. Elvis also began applying eyeliner to further accentuate his eyes around 1960, a trick he learned from actor Tony Curtis. As Elvis rose to fame, he continued to dye his hair to maintain his image, though he eventually shifted from shoe polish to a patented hair dye combination of Miss Clairol 51D and Black Velvet/Mink Brown by Paramount. Elvis later enlisted the services of Larry Geller, a beloved stylist in West Hollywood who also worked with stars such as Marlon Brando and Steve McQueen.

Elvis Presley holding an acoustic guitar.
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Elvis Didn’t Write Any of the Songs He Performed

Despite recording over 600 songs throughout his career, Elvis’ skills were lacking on the songwriting front. In a 1957 interview with Dig magazine, he explained, “I never wrote a song in my life… I’ve never even had an idea for a song.” In fact, Elvis never learned how to read or write music. That didn’t stop him from being credited as co-writer on many tracks, as his label demanded that certain songwriters give up 50% of authorship for any songs that Elvis recorded.

This isn’t to say Elvis went about the recording process lazily — quite the opposite. In the recording studio, he sometimes did 40 takes of a single track until it was perfect.

Elvis in his Karate suit.
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Elvis Earned Several Black Belts in Karate

Elvis began training in the shotokan style of karate in 1958 under a man named Juergen Seydel while he was stationed in Germany as a member of the U.S. Army. Upon returning to the United States in 1960, Elvis earned his first black belt in the style of chito-ryu from Hank Slemansky. Elvis later studied in a Memphis dojo under Kang Rhee, where he received a seventh degree black belt in 1973 and an eighth in 1974. Rhee wrote a book about his experiences training Elvis, noting that he “was the only person I ever saw wear boots into the dojo,” and that the musician “insisted on using real firearms” during training instead of wooden ones. Elvis was so passionate about karate that he later co-founded the Tennessee Karate Institute in 1974. Some have questioned whether his black belts had more to do with his celebrity status than his skills, but his love for martial arts was undeniable.

Stamps about Evis Presley.
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First issued by the United States Postal Service on January 8, 1993, a stamp featuring Elvis Presley went on to become the most popular commemorative stamp of all time. In 1992, two prospective designs were presented — one of a young Elvis from the 1950s and another of an older Elvis from his 1973 performance in Hawaii — with the former eventually selected by a whopping 75% of 1.2 million mail-in votes. Some 500 million copies of the stamp — three times the usual run — were printed by the USPS. Elvis would be honored with yet another commemorative stamp in 2015, making him the only musical artist with two USPS stamps featuring their likeness.

The Presidential yacht Potomac, carrying Franklin Roosevelt.
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Elvis Purchased FDR’s Old Presidential Yacht

During his presidency, Franklin Delano Roosevelt recommissioned a 165-foot former Coast Guard cutter known as the USS Potomac as his official presidential yacht. Dubbed the “floating White House,” the yacht went largely unused after FDR passed away in 1945, though it was later purchased by Elvis Presley in 1964 for $55,000. Elvis didn’t purchase the yacht for personal use, however; instead, he donated it to St. Jude Children’s Hospital in 1964 so that they could resell it to raise money.

The yacht isn’t the only presidential connection that Elvis shares. Genealogists also discovered that Elvis is actually a sixth cousin once removed of President Jimmy Carter.

Bennett Kleinman
Staff Writer

Bennett Kleinman is a New York City-based staff writer for Optimism Media, 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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Few are immune to the lure of a hidden treasure, its location well-protected by natural fortifications and/or the obscure clues of an old map or legend. The intrigue has spawned an array of popular novels, such as Robert Louis Stevenson’s 1880s Treasure Island, and movies including 1981’s Raiders of the Lost Ark, but there are also a few real-life stories of secret valuables and the explorers who sought them. Here are seven of history’s most famous treasures — some real and others possibly pure fantasy — that have kept fortune-seekers on the hunt for years.

Fragments of the Dead Sea Scrolls, considered one of the greatest archeological discoveries.
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The Copper Scroll Treasures

Discovered in the mid-20th century, the 2,000-year-old Dead Sea Scrolls represented the archaeological find of a lifetime, yet one of them points to hidden riches of even greater value. The lone manuscript written on a copper scroll, officially designated “3Q15,” reveals that around 160 tons of gold and silver are buried in 63 spots throughout modern-day Israel. Unfortunately, some of the wording in the ancient Hebrew text is a mystery to contemporary scholars, while other passages describe vague locations that are nearly impossible to pinpoint. It’s been speculated that the valuables have already been dug up by later generations of Jews or the Knights Templar (see below), though the more tantalizing possibility exists that the billions of dollars worth of gold and silver remain up for grabs.

Close-up of medieval weapons, shields and helmets.
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The Knights Templar Treasure

The Knights Templar, founded as the Poor Fellow-Soldiers of Christ and the Temple of Solomon, wasn’t so poor in its heyday, as it loaded up its coffers through the spoils of war, donations of royal benefactors, and oversight of an extensive banking network. Unsurprisingly, the medieval military order’s wealth and influence drew the scrutiny of other powerful figures, and in 1307, King Phillip IV of France set about disbanding the order and claiming its riches. Although many of its members were arrested and executed, the Knights Templar allegedly smuggled their valuables out of Paris via hay carts or vessels. As such, its artifacts could be almost anywhere in the world, although a few collectors in recent years have pieced together what looks to be an impressive assemblage of Templar keepsakes, including a sword, libation cup, helmet, and obsidian chalice.

Breathtaking views in the Peruvian Andes.
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The Lost City of Paititi

If the idea of secret caves and boats overflowing with gold tickles your fancy, then how about an entire city? Legend points to one such place in the Peruvian Andes, rumored to be a refuge for the Incas who escaped Spanish conquest in the 16th century. Expeditions have been trying to find Paititi for decades, but the biggest obstacle is its alleged location, in the midst of dense Amazonian growth, treacherous cliffs, and unwelcoming native tribes. In recent years, French explorer Thierry Jamin has followed clues toward an unusual “square mountain” in the Megantoni National Sanctuary of southeastern Peru, though time will tell whether this locale holds the secret city he and legions of predecessors have sought.

The blacksmith Goro Masamune making a sword.
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The Honjo Masamune

While some treasures consist of sparkling gems, others, like the creations of 13th-century Japanese swordsmith Goro Nyudo Masamune, are one-of-kind works of craftsmanship. Masamune forged one particularly potent blade that took on the name of an early wielder, Honjo Shigenaga, and passed through generations of the Tokugawa Shogunate that ruled Japan into the 19th century. However, shortly after the Honjo Masamune was named a National Treasure in 1939, the loss of World War II led to an order for the Japanese to turn over their swords, including the Tokugawas’ 700-year-old katana, to American occupiers. Sleuths have since sought to recover the priceless artifact, with some following the dead-end trail of a “Sgt. Coldy Bimore” who supposedly took possession. Others are resigned to the idea that it sits in the dusty basement or attic of an unknown veteran’s surviving family.

Scenic view of the legendary Lake Toplitz.
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Nazi Gold in Lake Toplitz

While the Japanese surrendered their treasures at the close of World War II, the Nazis supposedly hid theirs by dumping millions of dollars of gold into the Austrian Alps’ Lake Toplitz. But while rumors of the lake being a Nazi repository gained steam when counterfeit Allied currency was found submerged there in the 1960s, divers haven’t uncovered any of its alleged crates of gold. This is partly due to the difficulty of accessing the densely forested region, as well as the characteristics of the lake; frozen for much of the year, it also lacks oxygen in its deeper reaches, allowing the giant trees that fall in to remain preserved and block the path of explorers.

Mugshot of American gangster Arthur 'Dutch Schultz' Flegenheimer.
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The Dutch Schultz Stash

Famed gangster Dutch Schultz met his demise in a hail of gunfire at a New Jersey restaurant in October 1935, but not before delivering a stream of deathbed ramblings that reportedly included clues to a stash of loot hidden in the Catskill Mountains near Phoenicia, New York. Of course, the details of just what was squirreled away and where have changed over the years; it’s either a load of cash, jewels, or bonds, and it’s located near a sycamore … or maybe a pair of pine trees. It’s also worth considering the reliability of the source, who uttered such nuggets as, “Oh, oh; dog biscuit, and when he is happy he doesn’t get snappy,” as his life slipped away. However, the uncertainty hasn’t stopped the treasure-seekers who regularly descend on Phoenicia with the hope of uncovering what could be upwards of $50 million in mob funds.

Circa 1715, Captain Edward Teach (1680 - 1718), better known as Blackbeard.
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Blackbeard’s Treasure

No list of missing treasures would be complete without mention of a long-lost pirate trove, and this infamous buccaneer reportedly left behind a haul worthy of his formidable reputation. After nearly two years of plundering vessels in the West Indies, Blackbeard’s ship, Queen Anne’s Revenge, ran into a sandbar off North Carolina in June 1718. From there, it’s believed he transferred his valuables to other boats, leaving little sign of his haul when he was killed a few months later by a British Royal Navy force. Although Queen Anne’s Revenge was discovered in 1996, it seems the whereabouts of its captain’s big prize became a massive mystery to all except, as Blackbeard once eloquently put it, the legendary pirate himself and the devil.

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 RapidEye/ iStock

From fine art to classic cars, many incredibly valuable items have been offered up at auction. But while some bidders have their sights set on buying a prized gem, others are more keen on bidding for quirky and unusual items that are once-in-a-lifetime finds. Certain people will pay any price for the chance to add a weird relic to their collection, whether it’s a decades-old pastry or even the surgically removed body part of a famous musician. Here are six of the strangest items ever sold at auction.

A boxed slice of wedding cake, from the British Royal wedding of Prince William.
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A Slice of Cake From Queen Elizabeth II’s Wedding

On November 20, 1947, Queen Elizabeth II and Prince Philip were married in a lavish ceremony. Following the service, a reception was held at Buckingham Palace, where the 2,000 guests in attendance were each given a slice of the 9-foot-tall, four-tier wedding cake designed by confectioner Fredrick Schur. The indulgent cake included ingredients from across the British empire: dried fruit from Australia, butter from New Zealand, flour from Canada, brandy from South Africa, and Jamaican rum. But while some guests chowed down on the delicious dessert, others held on to their portions for decades to come.

In 2013, a slice of said cake went up for sale at Christie’s auction house, with an eventual hammer price of £1,750 (more than $2,000 today). The slice was wrapped and placed in a box inscribed with the words “EP Buckingham Palace 20th November 1947.” The package also included a card reading, “With the Best Wishes of Their Royal Highnesses The Princess Elizabeth and The Duke of Edinburgh.” Despite some evident decay, the dessert — which had been given to a man who formed part of the Guard of Honour at the royal wedding — attracted many bids. Two years later, in 2015, yet another slice of the cake went up for auction, this one selling for £500 (around $610 now). 2022 saw a portion of Queen Elizabeth II’s wedding cake go up for sale yet again, and this time the auction house warned potential buyers that the item is no longer edible.

Banksy's newly completed artwork 'Love in in the Bin'.
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The Self-Destructing Banksy Painting

Banksy is an anonymous graffitist who is heralded as one of modern art’s most prolific figures. Among his most notable works is 2006’s “Girl with Balloon,” a canvas version of which was put up for auction in 2018. Moments after the work sold for $1.37 million, a motor within the painting’s frame initiated a self-destruct sequence. The canvas began slowly descending through the frame, which shredded part of the spray-painted work into dangling strips while a shocked auction gallery looked on.

Banksy — who later posted an anonymous video taking credit for the self-destructive act — claimed that he had installed the shredder to destroy the painting should it ever be auctioned. While Banksy’s intent may have been to render the painting worthless, it did quite the opposite. In 2021, the partially shredded work, now renamed “Love Is in the Bin,” went up for auction yet again, this time selling for $25.4 million.

Close-up of John Lennon being interviewed.
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John Lennon’s Tooth

Sometime between the years 1964 and 1968, the Beatles’ John Lennon gave his housekeeper, Dot Jarlett, a tooth of his to dispose of. Lennon had had the tooth removed at the dentist earlier that day, though later changed course and said that Jarlett should give the tooth to her daughter, who was a huge Beatles fanatic. The family held on to Lennon’s stained and partially rotted tooth for decades before the molar ultimately hit the auction block in 2011, when it sold for $31,200. The tooth was purchased by a Canadian dentist named Michael Zuk, who even wrote a book about celebrity teeth. He claimed that when he heard about the auction, he “had to have it.” Oddly enough, the tooth isn’t the only body part of a famous musician to sell for thousands. In 2009, a lock of Elvis Presley’s hair from the year 1958 sold for $18,300.

Aerial view of old fashioned french toast, with butter and syrup.
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Justin Timberlake’s Leftover French Toast

Around the early 2000s, eBay was all the rage, as the online auction site had debuted just a few years prior. At the same time, few bands were more popular than ’N Sync, and heartthrob Justin Timberlake was a member. On March 9, 2000, Timberlake participated in an interview at New York’s Z-100 radio station, during which he partially consumed some French toast. Rather than throw the two slices of uneaten French toast in the trash, the station DJ took the food and listed it on eBay. The half-eaten breakfast sold for $1,025 to 19-year-old ’N Sync superfan Kathy Summers, who claimed that she planned to “probably freeze-dry it, then seal it… then put it on my dresser.”

Paining by Carl Kahler titled My Wife's Lovers.
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The World’s Largest Cat Painting

In 2015, Sotheby’s put the purr-fect painting up for auction. Considered the world’s largest cat painting, “My Wife’s Lovers” was created around 1893 by Austrian artist Carl Kahler, who spent three years on it. The painting measures 75 inches by 102 inches and weighs a staggering 227 pounds — so humongous that Sotheby’s had to construct a special reinforced wall to ensure it could be safely displayed.

Kahler was commissioned to create the painting by San Francisco philanthropist Kate Birdsall Johnson, a devoted cat lover who cared for around 350 cats. Of those 350, 42 made it into the piece, most prominently her cat Sultan, who had been purchased for $3,000 on a trip to Paris. Cat lovers came out in droves to view the painting in person while it was on display prior to the auction, with the work ultimately selling for a whopping $826,000.

Didius Julianus, the 20th Roman emperor.
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The Roman Empire

Didius Julianus is far from the most notable Roman emperor, but he was certainly one of the wealthiest. On March 28, 193 CE, the then-reigning emperor, Pertinax, was assassinated by Rome’s Praetorian Guard, leaving no apparent successor. The soldiers — who served as protectors of the throne — vowed that no successor would be allowed without their approval, which in turn led to an auction to determine who would ascend to the throne.

Didius Julianus, who boasted vast wealth, outbid Pertinax’s father-in-law, Titus Flavius Suspicianus, to purchase the position of Roman emperor for himself. Julianus’ bid is believed by some historians to have been in the range of 25,000 sesterces per Praetorian soldier, equating to a total payment of over 200 million sesterces. After handing over the winning bid, Julianus was declared emperor by the Roman senate, despite the fact that he was both feared and abhorred by that body. Julianus’ reign was short-lived, however — he was killed on June 1, 193 CE, by invading Danube forces.

Bennett Kleinman
Staff Writer

Bennett Kleinman is a New York City-based staff writer for Optimism Media, 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.

Original photo by Lorelinka/ Shutterstock

Ahoy, mateys! Everyone knows that in addition to making an excellent costume for Halloween, pirates are pretty fun, at least in their Disney-fied state with parrots, rum, jewels, and gold. However, a lot of the modern stereotypes about pirates just don’t hold water. Here are a few facts about pirates that won’t get you cast out to sea.

Robert Newton as Long John Silver.
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Pirates Didn’t Talk Like You Think They Did

Shiver me timbers: Pirates didn’t actually go around saying “arrrrrr” (or “ahoy, mateys,” for that matter). In fact, they probably spoke more or less just like other sailors of the time. We can blame the “pirate accent” on Hollywood. Actor Robert Newton gave an influential performance as Long John Silver in the 1950 Disney adaptation of Robert Louis Stevenson’s Treasure Island, which itself was the source of much (often inaccurate) modern-day pirate lore. Newton based his pirate-speak on the dialect of the West Country in southwestern England, where he hailed from (and where Long John Silver comes from, in the book). But don’t let the facts get in the way on September 19, which is International Talk Like a Pirate Day.

Captain William Kidd with a map and world globe.
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Pirates Didn’t Make Treasure Maps

This one is another myth from Treasure Island — not that we wouldn’t all enjoy finding a chest filled with gold doubloons. Although Captain Kidd did bury some booty on New York’s Gardiner’s Island, most pirates spent or sold the fruits of their “labor” pretty quickly. To date, there has never been a single case of an “authentic” pirate map resulting in a treasure find. However, in the golden age of piracy, accurate maps were rare and valuable, and were considered an actual treasure all on their own.

'Madame Ching', born Shih Yang,1775–1844.
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Women Ruled the High Seas, Too

Move over, Blackbeard: The “fairer sex” had its fair share of pirates. In addition to Anne Bonny (a prominent character in the piracy TV drama Black Sails), a number of women are known to have been successful swashbucklers. Cantonese commoner Cheng I Sao married into piracy, and upon her husband’s death expanded the family business beyond his wildest dreams. She commanded up to 600 ships and as many as 40,000 men, and defeated European and Chinese fleets in fierce battles. Upon her retirement, Cheng I Sao sailed 260 junks into Canton Harbor and demanded a pardon — which the terrified government was happy to grant.

Close-up of a pirate peg leg.
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Most Pirates Didn’t Have Peg Legs

Piracy is a pretty rough business and swords are sharp and pointy, so the occasional eye patch isn’t improbable on a pirate. But while amputations certainly wouldn’t be unheard of on an unsanitary ship, the trope of pirates sporting wooden legs is almost entirely a literary convention courtesy of Treasure Island. That being said, Robert Louis Stevenson’s character Long John Silver is said to have been inspired in part by Welsh pirate John Lloyd and perhaps French privateer Francois Le Clerc — two one-wooden-legged exceptions to the rule.

A large green parrot in a tropical forest.
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Some Pirates Probably Did Have Parrots

Although it’s yet another trope from Treasure Island, parrots as pirate companions certainly make sense. As pets go, the colorful birds would have consumed little of a ship’s resources, considering they eat like, well, birds. And parrots’ abilities to mimic human speech would have been an amusing diversion during long and often boring journeys at sea. Finally, the regions roamed by pirates during the “golden age” included many places (such as the Caribbean and Mexico) where the otherwise exotic birds were plentiful.

Jolly Roger, the Pirate's Flag.
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The Skull and Crossbones Flag Was Real

Pirate ships did actually fly the Jolly Roger, a black flag featuring a skull and crossbones, which was intended to strike fear into the hearts of all who saw it. Though they’d often originally approach their victims under a friendly flag, switching to a black banner (or sometimes a red one) announced their plundering intentions. One theory links the name “Jolly Roger” to Satan, as “Old Roger” was a common 18th-century nickname for the Devil. Not all pirate flags looked quite like this, though — some also incorporated bleeding hearts, an hourglass, or other fearsome insignia.

Cynthia Barnes
Writer

Cynthia Barnes has written for the Boston Globe, National Geographic, the Toronto Star and the Discoverer. After loving life in Bangkok, she happily calls Colorado home.

Original photo by tuulimaa/ iStock

Bones are the unsung heroes of biology. Always working beneath the surface, they’re the ossified architecture that makes our bipedal existence possible — not to mention the existence of thousands of other species. And their amazing durability gives archaeologists and paleontologists an unparalleled glimpse into early human history and beyond. Here are seven amazing facts about bones to shine some much-needed light on these building blocks of our bodies.

Spectacular eagle flying with wings outspread.
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Less Than 5% of Animal Species on Earth Are Vertebrates

All animals on Earth fall into one of two categories: vertebrates or invertebrates. This distinction is based on whether an animal has a spinal column. (Those that do, including humans, are the former; those that don’t are the latter.) Although all mammals, reptiles, amphibians, birds, and fish are vertebrates, they’re vastly outnumbered by invertebrates, which include worms, sea sponges, arthropods, and jellyfish (not really fish, despite their name). In fact, of the estimated 1.37 million surviving species on Earth, according to the International Union for the Conservation of Nature, only 66,800 have a spine. It turns out that a backbone is a bit of a biological rarity.

The largest invertebrate group by far is that of the class Insecta, which includes around 900,000 known living species (about 80% of the species on Earth) and millions more that have not yet been described by science. (Some estimates put the number of unnamed insect species as high as 30 million, though it’s likely less than that.) Insects don’t have spinal columns; instead, they have exoskeletons, which, while lacking a backbone, do have some spine-like features. And speaking of spines…

Close-up of an Reticulated Python (Python reticulatus).
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Pythons Have Nearly 20 Times More Vertebrae Than Humans

The average human is born with 33 distinct vertebrae, which are connected to one another through flexible joints called facets. Birds, meanwhile, have anywhere from 39 to 63 vertebrae. But even they can’t compete with snakes, especially large species of snakes like pythons. The Australian Oenpelli python (Morelia oenpelliensis), for example, may have as many as 600 vertebrae. That’s nearly three times as many bones as an adult human has in their entire body — though only two times as many as that same human has at birth. Which brings us to the next fact…

Portrait of new born child boy one week old sleeping peacefully.
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Human Babies Have More Bones Than Adults

Babies pack a lot of bones in their tiny bodies — around 300, in fact, which is nearly 100 more than adult humans have. The reason for this is biologically genius: These extra bones, many of which are made entirely or partly of cartilage, help babies remain flexible in the womb and (most crucially) at birth, making it easier for them to pass through the birth canal. As a baby grows into childhood and eventually early adulthood, the cartilage ossifies while other bones fuse together. This explains the “soft spots” in a baby’s skull, where the bones have yet to fuse completely.

It also explains why kids may be more susceptible to injury — fracture rates are high around the ages of 11 to 15, when many young people experience growth spurts due to puberty. This is because children’s bones have growth plates, which are particularly sensitive to trauma. Those growth plates eventually close as we age, and a child’s bone count decreases until it settles at 206. Our bones continue to change in a process called “bone remodeling” throughout our lives, but the number typically remains stable once we reach adulthood.

Woman suffering from wrist pain, numbness, or Carpal tunnel syndrome.
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Half the Bones in Our Bodies Are in Our Hands and Feet

Perhaps surprisingly, the lion’s share of those 206 bones in the human body are in our hands and feet. Each foot contains 26 bones, and each hand contains 27, for a grand total of 106 bones in just those four extremities. Interestingly (but perhaps not surprisingly), the hand and foot are similar in terms of bone structure. On our hands, for example, each finger has three bones — the distal, middle, and proximal phalanges — except for the thumb, which has two (just the distal and proximal). Our feet are the same, with three phalanges in each of the smaller toes, and two in the big toe. The five metacarpals — that is, the bones that make up the palm of your hand — are also arranged similarly to the five metatarsals in your foot. The hand, however, has an extra bone called the pisiform, which is located on the outside edge of the wrist and attaches to various tendons and ligaments.

Anatomy of the human femur.
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The Femur Is the Longest and Strongest Human Bone

The bones in our hands and feet are relatively small, though not as small as the stapes, the smallest bone in the human body, found in the middle ear. On the other end of the spectrum is the femur, notable for being the longest and strongest bone. The average adult femur — named for the Latin for “thigh,” where it’s located — stretches to about 18 inches in length and can support as much as 30 times the weight of your body. Because of this, it plays a crucial role in our ability to stand and move. It also connects to many muscles, tendons, and ligaments in our hips and knees.

Xray of hyoid bone 3D rendering.
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Only One Bone Isn’t Connected to Another Bone in the Human Body

Bones provide necessary skeletal scaffolding, and that means they’re usually connected to other bones via joints woven together with ligaments and tendons. However, there is one notable exception in the human body — one bone that is not connected to any other bone nearby. That exception is the hyoid, a small U-shaped bone in the neck, at the root of the tongue. Instead of connecting to other bones, the hyoid is linked only to muscles, ligaments, and cartilage, making it something of a “free-floating” loner. That’s not to say it’s superfluous, though. The hyoid aids in the very vital human activities of talking, chewing, and swallowing, so it’s actually pretty important.

Girl touches painful elbow, suffers ulnar joint injury during training.
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Your “Funny Bone” Is Not a Bone

Your “funny bone,” named as such for its location near the humerus bone — “humorous,” get it? — is not really a bone at all. Rather, it’s part of the ulnar nerve, which runs from your neck all the way to your hand. Nerves are usually protected by bone, muscle, and fat, so they can perform their bioelectrical functions undisturbed, but a small part of the ulnar nerve in the back of the elbow is a little more exposed. There, the nerve is protected only by a tunnel of tissue, known as the cubital tunnel, so when you hit your “funny bone,” the ulnar nerve presses against the medial epicondyle (one of the knobby ends of the humerus bone), which in turn sends a painful sensation throughout your lower arm and hand. And because the nerve gives feeling to the pinky and ring fingers, those two digits may feel particularly sensitive compared to your other three fingers.

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 shironosov/ iStock

When it comes to teeth, there’s always something new to learn. Innovations like fillings and toothbrushes had a long and rich history before they reached our mouths, and cultural norms can vary wildly — or be oddly similar — throughout place and time.

Which famous author became a tooth-removal evangelist? What animals have far more teeth than you’d expect? What kinds of small creatures gather baby teeth in the night?

Smile big and read on for eight facts that just might change the way you think about your pearly whites.

A view of a tooth enamel.
Credit: edwardolive/ Shutterstock

Tooth Enamel Is the Hardest Substance in the Human Body

Move over, bones! The outer layer protecting our teeth is the hardest thing in our bodies. The next layer down, dentin, is also stronger than bone. The trade-off is that teeth have a very limited ability to heal themselves, unlike bones. You can’t put a cast on a cavity, after all.

Close-up of a snail on a lime.
Credit: Krzysztof Niewolny/ Unsplash

Snails Have Thousands of Teeth

Each unassuming snail hides a microscopic secret: between 1,000 and 12,000 tiny teeth protruding from its tongue. They use these teeth to break down parts of their food, and since the teeth are not especially durable, they need to be replaced pretty frequently. This tooth-covered tongue is called a radula, and it’s not exclusive to snails. Slugs have them, too, along with some squids.

Not all radula are the same, though. Some predatory snails have venomous radula, and the terrifying-looking Welsh ghost slug has razor-sharp (and teeny-tiny!) teeth for eating worms.

Two wooden bamboo eco friendly toothbrushes and a green leaf.
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The Earliest Toothbrushes Came From China

Tooth-cleaning goes back thousands of years, with methods including abrasive powder, cloth, and frayed sticks. Bristle toothbrushes emerged in China during the Tang dynasty (618–907 CE); the handles were made from ivory or bamboo. These brushes didn’t catch on in Europe until the 17th century, first in France and later in England.

While toothbrushes evolved in design throughout the 18th and 19th centuries, the materials stayed largely the same. Plastic handles came along in the early 1900s, and nylon bristles followed in 1938.

Toothpaste being put on a toothbrush over the bathroom sink.
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It Took a While to Get Americans to Brush Their Teeth

It sounds gross, but it’s true: Toothbrushing didn’t become a standard, everyday part of American life until the 1940s. That doesn’t mean all people didn’t brush their teeth — it just wasn’t the standard practice it is today.

The tide started to change in the decades prior, though. In the 1910s, schools started implementing dental hygiene programs like toothbrush drills, in which children practiced brushing their teeth with their teachers. Similar programs visited factories to care for workers’ teeth. This wasn’t just benevolence: Employers hoped their workers would miss fewer days of work due to tooth infections.

With dental hygiene already becoming normalized, one thing set it over the edge: American soldiers during WWII were required to brush their teeth every day, and brought the habit back home with them.

Close-up of female with open mouth during oral checkup at the dentist.
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The Oldest Known Dental Filling Is Made of Beeswax

In 2012, scientists used the jaw of a Neolithic man to test out some new X-ray equipment — and in the process, made an exciting discovery. The man, who lived 6,500 years ago in modern-day Slovenia, had a filling made out of beeswax.

Drilling goes back even further than filling, though; archaeologists have found drill holes in teeth from more than 7,500 to 9,000 years ago in a graveyard in Pakistan.

A man looked scared as his tooth is about to be pulled.
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Tooth Pulling Used to Be a Public Spectacle

Before modern dentistry existed, the task of tooth extraction in Britain fell to a strange assortment of professions, including blacksmiths, wigmakers, and a very specific kind of sideshow entertainer. Like snake-oil salesmen, charlatan tooth-drawers traveled to fairs and marketplaces wearing silly hats and sometimes even strings of teeth, eager to rip out teeth for curious spectators. They typically made a grand entrance, sometimes on horseback or with a team of assistants. Loud noises were a key part of the act, both to draw a crowd and to drown out the screams of their “patients.” This continued into the 1800s.

The alternatives, for what it’s worth, weren’t great either. In the 18th and 19th centuries, you could see a “barber-surgeon” (or later, just a surgeon) to get your painful tooth removed with a tooth key, a clawed device that looks a little like a broken corkscrew. All in all, it was not a great time to have bad teeth.

A single tooth underneath a pillow for the tooth fairy.
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Tooth Fairy? More Like Tooth Mousie

Today, the most common American version of the tooth fairy is a small, whimsical figure, typically female, who checks under our pillows at night for lost baby teeth. But the tooth fairy is an early-20th-century invention, and that particular image rose to prominence right as Disney was releasing animated films featuring kind, gentle, feminine fairies.

The fairy is likely layered on top of a much longer tradition of offering baby teeth to rats and mice — the hope being that the child’s permanent teeth would grow in as strong as a rodent’s. While this practice appears throughout the world, it’s perhaps most common today in Spanish-speaking households. In fact, a specific tooth mouse named Ratoncito Perez emerged in Spanish lore in the 1800s, and spread throughout Latin America in children’s stories. A similar tooth mouse, La Petite Souris, goes back to 1600s France. In some countries, children make it more convenient for the rodent by placing their teeth in or near mouseholes.

The core concept — giving children money in exchange for teeth — dates back to at least the 12th or 13th century, and appears in Norse and Northern European tradition, while other lost-tooth rituals are common throughout the world’s history.

Portrait of the British writer, Roald Dahl.
Credit: Ronald Dumont/ Hulton Archive

Roald Dahl Had All His Teeth Removed — Voluntarily — at 21

Famed author Roald Dahl was strange in many ways, including his strong opinions about teeth. When he was 21 years old and working at Shell Oil, he decided having teeth was just too much trouble, so he visited a highly regarded dentist in London to have them all taken out and an artificial set created. Five years later, he treated himself to extra-fancy new teeth with the sales from Shot Down in Libya, his first piece of paid writing.

This wasn’t especially unusual for British people at the time, but it gets weirder: Dahl became a teeth-removal evangelist. He convinced his mother to have all of hers removed. Then he turned to his four living siblings, none of whom actually went for it; this made him impatient and “foul-mouthed,” according to biographer Donald Sturrock. Finally, he convinced his brother-in-law to go — but to Dahl’s surprise, he never got false teeth to replace them.

Sarah Anne Lloyd
Writer

Sarah Anne Lloyd is a freelance writer whose work covers a bit of everything, including politics, design, the environment, and yoga. Her work has appeared in Curbed, the Seattle Times, the Stranger, the Verge, and others.

Original photo by oldbunyip/ Shutterstock

A sandwich may be one of the most humble foods known to humankind, often slapped together with whatever’s found in the fridge and eaten on the go. These easily customizable eats go by many names depending on their variety — sub, hoagie, roll, gyro, po’ boy, and more — and they’re one of a few foods that span cultures and time. Here are eight facts you may not know about the concoctions we create with two slices of bread.

John Montagu, 4th Earl of Sandwich.
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The Word “Sandwich” Likely Gets Its Name From a Real-Life Royal

John Montagu (1718-1792), the British noble who served as the fourth Earl of Sandwich, was a politician and postmaster. He’s also credited as the inventor of the sandwich. Humans have arguably been combining bread with savory fillings for thousands of years, but Montagu is said to have inspired the dish’s official term. (His family name, meanwhile, comes from a place name that means “sandy harbor.”) One 18th-century account claimed Montagu popularized sandwiches by requesting sliced meat and bread as a meal so that he could continue gambling, though other accounts say the earl likely also consumed sandwiches while working at his desk. With his title used as a description, sandwiches exploded in popularity throughout Europe, soon served to nobility and civilians alike.

Sandwich, Illinois on map.
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Three U.S. Cities Are Named Sandwich

Massachusetts is home to the oldest American city called Sandwich, founded in 1637. The oldest town on Cape Cod — Massachusetts’ history-heavy, hook-shaped peninsula — was named after Sandwich, England. Nearby in New Hampshire, the town of Sandwich got its name in 1763 to honor John Montagu, the fourth Earl of Sandwich mentioned above. And the Midwestern town of Sandwich, Illinois, also bears the name. Originally called Almon, the Illinois town’s name was scrapped in the 1850s and eventually switched to Sandwich in honor of John Wentworth — a politician born in Sandwich, New Hampshire — who was responsible for getting the Illinois town a railroad stop.

Fluffernutter sandwich on a white plate.
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A Descendant of Paul Revere Invented the Fluffernutter Sandwich

Paul Revere is best known for his patriotic ride during the Revolutionary War, though he’s also the great-great-great-grandfather of Emma Curtis, the Massachusetts woman who invented the fluffernutter sandwich. While Curtis isn’t the original creator of marshmallow creme — the spreadable sweet that contributes the sandwich’s “fluff” — she was known to popularize the product, manufactured by her family, through inventive recipes. Curtis first released the recipe for her peanut butter and marshmallow creme delight in 1918, amid World War I, initially calling it a Liberty sandwich, aka a patriotic way to consume less meat during wartime.

Little kid girl giving mom sandwich to bite.
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Americans Eat Millions of Sandwiches Each Year

The most popular food served in the U.S. just may be the sandwich. On any given day, 47% of American adults will eat a sandwich, with about half of those served for lunch and a third consumed for dinner. In one year, Americans chow down on an estimated 300 million sandwiches, the most popular including cold cuts. Peanut butter and jelly sandwiches, meanwhile, account for just 6% of sandwiches consumed by adults.

A peanut butter and jelly sandwich with oranges and grapes.
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PB&J Sandwiches Were Once Upper-Class Cuisine

The beloved peanut butter and jelly sandwich is now considered kid-approved dining, though it wasn’t always that way. Around 1901, PB&J sandwiches were served in tea rooms frequented by wealthier American patrons. More savory varieties of the sandwich nixed the jelly and paired peanut butter with cheese, lettuce, or Worcestershire sauce. By the 1920s, the invention of commercially sliced bread helped PB&Js become a lunchtime staple for all Americans, particularly schoolchildren.

Grilled cheese sandwich with gourmet four cheese in a basket cut in half.
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The World’s Most Expensive Sandwich Includes Edible Gold

Would you pay $214 for a taste of the world’s priciest sandwich? That’s the cost of the record-breaking grilled cheese sandwich at Serendipity 3 in New York City, made with French bread (itself made with Champagne and gold flakes), and thick slices of caciocavallo podolico cheese (a rare type of Italian dairy). Each sandwich is seared using white truffle oil containing gold flakes, plus butter infused with white truffles, with more edible gold applied after cooking. The entire dish is served with a side of lobster tomato bisque.

A beef salami sandwich.
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A Sandwich Helped Detectives Catch a Jewel Thief

In February 2003, burglars robbed the seemingly impenetrable Antwerp Diamond Centre, pilfering $100 million in diamonds, gold, and more from an underground vault. Detectives were left with few leads; the thieves absconded with the security camera footage and left behind few clues, though one — a half-eaten salami sandwich — was later recovered from a nearby site where the crooks attempted to destroy evidence. Detectives were able to make arrests with the help of cellphone records, DNA evidence, and a grocery store receipt found in a suspect’s home that matched the sandwich’s ingredients. However, most of the diamonds stolen in the heist have never been recovered, and police believe accomplices in the crime are still at large.

Astronaut John W. Young.
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A Corned Beef Sandwich Was Smuggled Into Space

Astronaut food is the stuff of science — often heavily processed to give it the chance to hold up in space, and sometimes looking less than appetizing. That’s why one astronaut packed his own sandwich and jetted off into space with it. In 1965, NASA pilot John Young hid a corned beef sandwich in his spacesuit pocket prior to the launch of the Gemini III. Nearly halfway through the five-hour flight, Young pulled out the sandwich and offered a bite to mission commander Gus Grissom, though the unfinished sandwich was stowed away after breadcrumbs began to make a mess. Young was reprimanded once back on Earth, and a congressional inquiry took place. A resin-preserved replica of the sandwich now sits at the Grissom Memorial Museum in Mitchell, Indiana.

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Interesting Facts writers have been seen in Popular Mechanics, Mental Floss, A+E Networks, and more. They’re fascinated by history, science, food, culture, and the world around them.