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On June 19, 1865, some 250,000 enslaved people in Texas gained their freedom, ending slavery in one of its last major outposts in the United States. Today, this momentous event is marked by a federal holiday known as Juneteenth, which is sometimes referred to as the U.S.’s second Independence Day. Although a new holiday for many Americans, Juneteenth has a long history. These six facts show why the day more than deserves a hallowed spot among the nation’s holidays.

American Union Army Major General Gordon Granger poses in his Union Army uniform.
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Juneteenth Commemorates a Proclamation — But Not Lincoln’s

Most Americans are familiar with the Emancipation Proclamation — President Abraham Lincoln’s famous 1863 declaration that freed all enslaved people in the Confederacy — but the proclamation itself didn’t guarantee those freedoms. In fact, it would be a couple of years before Confederate General Robert E. Lee surrendered his Army of Northern Virginia at Appomattox Court House to General U.S. Grant. Although the surrender was the last nail in the Confederacy’s coffin, many Texas enslavers still resisted emancipation. On June 19, 1865, Major General Gordon Granger issued General Orders, No. 3, stating that “the people of Texas are informed, that in accordance with the proclamation from the Executive of the United States, all slaves are free.” Backing up that order with 2,000 federal troops in Galveston, Granger ensured the freedom of a major portion of the last remaining enslaved people within the borders of the U.S.

A Texas Historical marker at the City of Houston's Emancipation Park.
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The First Juneteenth Was Celebrated One Year After the Civil War

It didn’t take long for Juneteenth (originally known as “Emancipation Day” or “Jubilee Day”) to become a beloved celebration. One year after Granger’s General Orders, No. 3, the newly freed people of Texas celebrated the very first Juneteenth with community gatherings throughout the state that included sports, cookouts, dancing, prayers, and even fireworks. Over the years, celebrations became ever more elaborate — and more resilient, as racist Jim Crow laws took hold of the South. To continue celebrating the holiday, some freedmen even bought land in 1872 in Houston as a place to celebrate Juneteenth every year (today, that land is known as Emancipation Park; Juneteenth is still celebrated there). One by one, freed Texans traveled to other parts of the United States, and brought their Juneteenth customs with them. By the 1920s, the holiday was unofficially celebrated around the country.

Juneteenth day picnic food.
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The Color Red Is Prominent in Juneteenth Celebrations

For more than a century, Juneteenth celebrations have been accompanied by red velvet cake and red-hued refreshments, whether strawberry soda or red lemonade. There are a few theories behind this color-specific culinary tradition. One is that the color red is a significant hue in West African cultures, often symbolizing strength and spirituality. Another theory is that red featured prominently in the enslavement narratives of Yoruba and Kongo people forcibly brought to Texas in the 19th century. Other historians argue that the color is tied to special occasions dating back to ancient African traditions.

As for red drinks specifically, the tradition is likely linked to two West African plants — the kola nut and hibiscus — which can be used to make a variety of red-hued teas and refreshments. After the Civil War, newly freed Black folks also often infused lemonade with cherries or strawberries to make a cheap, refreshing drink. With the advent of food dyes and the arrival of the Texas-made Big Red soda in the 1930s, red foods and drinks were solidified as a staple of the Juneteenth menu.

Washington Monument where people joined in support of the Poor People's Campaign Washington.
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Juneteenth Was Revived During the Civil Rights Movement

At the end of the 19th century and beginning of the early 20th century, Black people living in Texas — along with the rest of the American South — were victimized by Jim Crow laws and a surging white supremacist movement. Many Black families left Texas during the Great Migration, and the holiday seemed doomed to be stamped out by this new wave of virulent racism. During World War I, some even viewed Juneteenth as unpatriotic, as it focused on a “dark chapter” of U.S. history. But the holiday found new life — nearly a century after it was first celebrated — during the civil rights movement of the 1950s and ’60s. The Poor People’s March on Washington, occurring only months after Martin Luther King Jr.’s assassination, was specifically organized to coincide with Juneteenth in 1968. By the 1970s, major cities around the U.S. were holding large Juneteenth celebrations, and in 1980 Texas became the first state to officially make Juneteenth a holiday.

People carry a Juneteenth flag as they march during a Juneteenth re-enactment celebration.
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Juneteenth Has Its Own Flag

Created in 1997, the Juneteenth flag is full of symbols — some more obvious than others. Starting with the most basic, the date June 19, 1865, running along the flag’s outer edge, represents the date of Granger’s General Orders, No. 3. The single star in the flag’s center represents Texas (aka “the Lone Star State”) as well as symbolizing the freedom of all Black Americans in all 50 states. Around the star is a “nova” (a kind of starburst), representing the birth of a new beginning for African Americans throughout the country, while the arc across the flag’s center represents a new horizon. Finally, the red, white, and blue color scheme tells us that enslaved people were and forever shall be remembered as Americans.

Office closed marked on a calendar in observance of the Juneteenth federal holiday.
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It’s the U.S.’s Newest Federal Holiday

Although the celebration of slavery’s end stretches back more than 150 years, Juneteenth didn’t become a federal holiday until 2021, when President Joe Biden signed the Juneteenth National Independence Day Act. Prior to that, the last holiday to be recognized by the federal government was Martin Luther King Jr. Day, back in 1983. Before Juneteenth became a federal holiday, all but one state (South Dakota) recognized it as a holiday, though only six states — Texas, Massachusetts, New York, Virginia, Washington, and Oregon — made it an official paid day off (that number has since grown). In 2023, more than 25,000 people will attend Philadelphia’s Juneteenth Parade & Festival, museums across Alexandria will organize Juneteenth events in Virginia, and citizens living in a free nation will return to Galveston, Texas, to once again celebrate the end of this great injustice.

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 DanielPrudek/ iStock

For mountaineers looking to climb the world’s most challenging peaks, Everest is the top prize. At 29,032 feet, Everest is the highest mountain in the world in terms of elevation and the crown jewel of the Himalayas. (Overall, the region is home to nine of the 10 highest peaks in the world, with the exception being K2 in the Karakoram range.) Although its height is its most touted feature, Mount Everest is the subject of many incredible facts — some of which stretch 50 million years into the past.

Evening view of Ama Dablam on the way to Everest Base Camp.
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Mount Everest Has Many Names

Beginning in 1802, the Great Trigonometrical Survey was a massive undertaking to painstakingly survey the entire Indian subcontinent (then a colony of Britain). British surveyor George Everest served as the Surveyor General of India for 13 years (1830 to 1843) before retiring and returning to Britain.

In 1865, a mountain previously named “Gamma,” “peak b,” and finally “Peak VX” received a new name that finally stuck — Mount Everest. Everest’s name was put forward in 1856 by his successor, Andrew Scott Waugh, in honor of his friend and mentor. However, the traditional Tibetan name of the mountain is Chomolungma, which means “Goddess Mother of the World.” The Sanskrit name is Sagarmatha, or “Peak of Heaven.”

Sir George Everest, military engineer, 1854-1866.
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Everest Never Saw the Peak Named After Him

Although George Everest dedicated his life to surveying the Indian subcontinent, he never traveled to Nepal, and likely never saw the famous peak that now bears his name. His closest connection with the mountain was through his protégé Andrew Scott Waugh, who made the first scientific observations of the mountain and announced its height at 8,840 meters (29,002 feet) in 1856. This height surpassed Kangchenjunga, a nearby mountain then considered the world’s highest peak. Although K2 came close to knocking it out of the top spot, no other mountain has ever surpassed Everest’s impressive stature.

A mountaineer stops to admire the view of Mt Everest in the middle of the Himalayas.
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Everest Started Forming 50 Million Years Ago

About 50 million years ago, only 5 or 6 million years after the cataclysmic end of the dinosaurs, the Indian subcontinent — traveling some 15 centimeters per year — closed an ancient sea named Tethys and collided with the Eurasian continent. As the two tectonic plates buckled, they formed a dramatic uplift that created Everest along with the rest of the Himalayan mountain chain. Additionally, Everest’s location near the Tropic of Cancer means that mountain glaciers (ice masses that carve away most mountains) are relatively small on Everest, which is part of why it remains so impressively massive to this day.

Hiker walks on train in Himalayas.
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Everest Grows 4 Millimeters Per Year

Everest is already the highest peak above sea level, and it’s still growing. The ancient collision that formed the mountain many millions of years ago is still ongoing, as India continues to advance northward about 2 inches per year. In fact, in 10 million years, India will plow into Tibet by more than 100 miles, effectively erasing the country of Nepal. Through all this tectonic drama, Everest will continue climbing an additional 4 millimeters, or roughly 0.16 inches, per year.

Ama Dablam framed with praying flags in Himalaya, Nepal.
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Mount Everest Is the World’s Highest Mountain — But Not the Tallest

Everything’s relative when it comes to measuring the tallest mountain in the world. Going off of a mountain’s number of feet above sea level is what gives Everest the crown, but there are other contenders for the globe’s tallest peak. The most obvious one is Mauna Kea, a shield volcano in Hawaii that is the tallest mountain in the world when measured from base to peak. In total, Mauna Kea is about 33,000 feet — roughly 4,000 feet taller than Everest.

Another contender is Mount Chimborazo. At 20,564 feet above sea level, this mountain in Ecuador doesn’t even come close to Everest’s height. However, when measuring from the center of the Earth, Mount Chimborazo gets a big boost by being located near the equator. Because the planet bulges at its middle due to the centrifugal forces produced by its rotation, Mount Chimborazo is actually around 6,800 feet taller than Everest.

A jumping spider on a rock.
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Jumping Spiders Are the Only Permanent Residents on Everest

The high altitude of Everest makes it difficult for life to thrive on its slopes — difficult but not impossible. The Himalayan jumping spider is the only known permanent resident on Mount Everest, making it one of the highest-living species on Earth. This impressive feat is even honored in its scientific name, Euophrys omnisuperstes, which means “standing above everything.” Because the spider needs to feed on other insects, it likely feasts on flies and other bugs blown up from lower altitudes, as part of what’s known as an Aeolian Biome.

Sherpas climbing the Himalayas.
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Sherpas Have Evolved To Be Everest-Summiting Pros

The Sherpa people are a tribe native to Nepal, Tibet, and the Himalayan region, and are often guides for foreign adventurers looking to reach the top of Everest and other Himalayan peaks. Scientists have studied the biology of these Native people and discovered that Sherpas have evolved over thousands of years to be excellent climbers in high altitudes.

Climbing Everest’s peak involves a variety of challenges, but one of the deadliest is hypoxia and altitude sicknesses known as HAPE (high altitude pulmonary edema) or HACE (high altitude cerebral edema) — all results of the body’s inability to function properly in low-oxygen environments. With the first known Sherpas living in the region some 30,000 years ago, this tribal group’s mitochondria are much more efficient at using oxygen when it’s scarce compared to “lowlanders.” This amazing ability is why Sherpas hold many mountaineering records, including the most ascents of Everest by a single person (26).

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 il21/ Shutterstock

Wine has conquered the world. In 2021, global wine consumption topped 23.6 billion liters, or roughly 9,440 Olympic-size swimming pools’ worth of vino. Here are some more surprising facts about reds, whites, and rosés, from their long and illustrious history to the reasons you might want to avoid drinking wine left over from shipwrecks.

View of a wine harvest in the mid 1900s.
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People Have Been Making Wine for Thousands of Years

Between 2007 and 2010, archaeologists excavated a cave near Areni, Armenia, which contained the remnants of an ancient winemaking operation. They unearthed a press for crushing grapes, jars for fermentation and storage, ceramic cups, and the remains of grape vines, skins, and seeds. (The organic material had been preserved by a hardened layer of sheep dung, which protected it from decay.) By analyzing a compound called malvidin, which makes grapes reddish-purple, the researchers estimated that the site was active around 4000 BCE, during the Copper Age, making it the oldest known winery. Even earlier biomolecular evidence of viniculture dates from about 6000 BCE. The oldest type of wine still made today is Commandaria, a sweet red-white dessert blend from Cyprus that dates back to 2000 BCE.

Bunches of the Sangiovese grape (Vitis vinifera).
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Almost All Wines Are Grown From a Single Species of Grape

The mother vine of almost all wines today is Vitis vinifera, a grape likely native to Western Asia. Over millennia, winemakers have domesticated and cross-bred the vines to create subspecies with distinct colors, flavors, and suitability to different climates. About 8,000 cultivars exist today, including well-known varieties like pinot noir, chardonnay, sauvignon blanc, and merlot. V. vinifera vines have long been cultivated in regions with hot, dry summers and mild winters, such as Italy, Spain, and France, but the U.S., Chile, Australia, and South Africa are also major producers, among other countries.

View of the pest control of the grape phylloxera.
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In the 19th Century, an Insect Nearly Wiped Out France’s Wine Industry

One downside of basing a global wine industry on a single grape species is that it can be decimated by a particular disease or pest. A grape-attacking aphid called phylloxera, native to North America, was accidentally imported to France in the 1860s. Whereas indigenous American grape species had built up resistance to the pest, French winemakers had guarded the purity of their vines to ensure their wines’ high quality, which made the plants susceptible to assault from the foreign bug. As a result, phylloxera tore through French vineyards in the late 19th century and forced French winemakers to graft phylloxera-resistant American vines onto the French vines to save them.

A view of a wine vineyard in Chile.
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A Wine’s Terroir Can Be Legally Protected

The 19th-century French vintners initially resisted the plan to graft American rootstocks onto their precious vines over fears that their wines’ special flavor profile, or terroir, would suffer. “Terroir” refers to the whole environment in which the grapes are grown — soil and water characteristics, temperature, altitude, and so on — as well as the flavor and aroma that these factors impart. A wine’s terroir can be a legally protected entity in France, where the AOC system (an acronym for Appellation d’Origine Contrôlée) classifies wines according to their region of production and quality. It’s this system that says Champagne can come only from the Champagne region to protect its unique terroir.

A worker at a California winery pours a glass of wine for a tasting.
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California Wines Beat French Rivals in a Blind Taste Test

In a legendary event dubbed “The Judgment of Paris,” held on May 24, 1976, French wine experts preferred upstart California wines to the finest French ones in a taste test. An English wine shop owner staged the event to drum up business, and everyone assumed a French victory was a foregone conclusion. The nine experts swirled, sniffed, and sipped a variety of reds and whites, then tallied the number of points they awarded to each sample; shockingly, a cabernet sauvignon and a chardonnay from Napa Valley won out, proving that countries besides France could produce the world’s finest wines. A bottle of each winning wine is now in the Smithsonian collection.

Bottles of 19th-century wine lie on a shelf in a cellar.
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Wine Is Often Found in Shipwrecks

Wine has been traded around the world for centuries, and the vessels transporting it have occasionally run into trouble. Today, intact bottles of wine can sometimes be located among the wreckage of sunken ships. Experts advise against drinking their contents, but some curious gastronauts can’t be dissuaded. In 2009, a hurricane disturbed the seafloor around Bermuda and revealed still-corked bottles in the wreck of a Civil War-era ship; a panel of tasters said it was “awful.” Champagne recovered from a 170-year-old shipwreck in the frigid Baltic Sea gave tasters hints of cheese and “wet hair.” Among the recent finds yet to be sampled are unopened bottles of wine from the wreck of the HMS Gloucester, which sank while carrying the future king James II of England, and bottles that went down with a British steamship after a German torpedo attack during World War I.

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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.

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Eleanor Roosevelt was one of the most widely influential women of the 20th century — so much so that serving the longest-ever term as First Lady (1933 to 1945), during World War II no less, is only one bullet point on her resume. As an educator, activist, political adviser, and journalist, Roosevelt touched lives all over the world, helped change the course of history, and clearly spoke her mind, even when her views were bolder than those of her husband, Franklin Delano Roosevelt.

After her death in 1962, she left behind an incredible legacy of social justice, taking forward-thinking stances on issues such as school integration, women in the workplace, and immigrants’ rights. Her personal life is almost as interesting, including her untraditional marriage to FDR.

What was her first connection to the Roosevelt family? How did she enter social service? Just how thick was her FBI file? These six facts about Eleanor Roosevelt might teach you something new about the national icon.

Photo of Eleanor Roosevelt.
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Eleanor Roosevelt Was Teddy Roosevelt’s Niece

Eleanor had presidential connections far before her marriage to FDR, and when the time came, she didn’t even have to worry about taking his last name (she was born Anna Eleanor Roosevelt). She was Theodore Roosevelt’s niece; her father was Teddy’s younger brother Elliott.

In case you’re wondering, FDR comes from a different branch of the Roosevelt family. He was Teddy’s fifth cousin (and fifth cousin once removed to Eleanor). The family was split into two distinct clans, both based in New York and each with its own distinct culture and ethos; FDR came from the Hyde Park Roosevelts, while Teddy (and Eleanor) came from the Oyster Bay Roosevelts.

Eleanor Roosevelt reading to children.
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Eleanor Roosevelt’s First Career Was Teaching

Public service was deeply meaningful to Eleanor throughout her life, including in her younger days. Not long after turning 18, she started teaching at the Rivington Street Settlement House, a social services facility serving New York City’s Lower East Side, particularly its immigrant population.

She continued teaching even as her family’s political responsibilities increased. In 1926, she, along with suffragist Marion Dickerman, bought a K-12 private school for girls called the Todhunter School, also in New York City. Eleanor was a popular teacher, and covered a variety of subjects: history, current events, literature, and drama. After her husband was elected governor of New York in 1929, she continued to teach, even though the position required living in Albany. She commuted back and forth between the capital and the city several days a week.

resident Franklin D. Roosevelt seated and wife Eleanor Roosevelt.
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Her Marriage Wasn’t Strictly Monogamous

Franklin and Eleanor Roosevelt’s marriage started out, at least from the outside, as pretty ordinary. They were married in 1905, and had six children between 1906 and 1916. In 1918, however, Eleanor found out that Franklin was having an affair with Lucy Mercer, her former social secretary, which was devastating — at least, at first. The pair remained married as close, supportive partners — Eleanor was hugely supportive of Franklin’s continued political career after he was stricken with polio, and the pair even retained their pet names for one another — but pursued romantic relationships elsewhere, although biographers aren’t sure how physical those relationships got. Franklin continued seeing Mercer, and was even with her when he died in 1945. Eleanor, meanwhile, found relationships with both men and women.

First Lady Eleanor Roosevelt types as newswomen watch.
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She Wrote a Newspaper Column for Nearly 30 Years

Starting at the very end of 1935 and continuing until her death in 1962, Eleanor kept a regular, nationally syndicated newspaper column called “My Day.” Eventually, it appeared in 90 different U.S. newspapers, detailing both her actions of the day and causes she supported — including ones that perhaps diverged a little from FDR’s views. After her husband’s death, she spoke even more freely about her viewpoints, and chose to keep advocating through her writing instead of running for office herself. Some newspapers dropped her column after she advocated for the election of Adlai Stevenson II in his run against Dwight D. Eisenhower in 1956, leading United Features Syndicate to instruct her to limit her support for candidates, which she did not do.

For the majority of the run, Eleanor published six columns a week; only after her health began to decline in the last couple of years of her life did she cut that down to three.

Portrait of Eleanor Roosevelt and Autherine Lucy.
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She Publicly Resisted Racial Segregation

Eleanor’s lifetime overlapped with some particularly dark chapters in America’s treatment of its Black citizens, and by 1939, she was using her platform to loudly and publicly speak against racism and segregation. In 1939, she resigned from the Daughters of the American Revolution, announcing her departure in her column, after the group refused a venue to prominent African American musician Marian Anderson. She and some other presidential advisers, as well as NAACP Executive Secretary Walter White, took the issue to FDR, and Anderson eventually appeared at a much bigger venue — the Lincoln Memorial — performing for a crowd of 75,000.

Even as FDR remained more tepid in opposing segregation, Eleanor kept swinging. When she learned in 1938 that a series of public meetings in Alabama called the Southern Conference for Human Welfare was split down the middle and segregated by race, she tried to sit in the Black section. When a police officer threatened to remove her, she moved her folding chair to the center of the aisle between the white and Black sections, where she stayed for the rest of the conference. Even after facing staunch criticism from conservatives after the Detroit Race Riots of 1943 — she had supported integrating the local housing project at its center — she kept going, and even led civil rights workshops in schools.

She was far from perfect, and even opposed a proposed 1940s march on Washington for racial equality, although she did arrange a meeting between organizers and FDR. But she continued to speak out against segregation for the rest of her life, including strongly advocating for school integration in both her column and in person, especially around the time of Brown v. Board of Education. Her last column before her death emphasized the connection between school integration and aggressive police tactics.

Photo of Eleanor Roosevelt with headphones on.
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The FBI Investigated Eleanor Extensively for Communist Activity

Between her support for civil liberties and doing stuff like inviting a student advocacy organization accused of communist connections to crash at the White House while they waited to testify before the House Un-American Activities Committee, Eleanor was pretty unpopular with J. Edgar Hoover’s FBI. It didn’t help that she called Hoover’s tactics “Gestapo-ish,” either.

She was the subject of one of the largest single files from the era, adding up to around 3,000 pages. In addition to investigating her friends, family, and colleagues, the FBI tracked the existence of supposed “Eleanor clubs,” which white Southern segregationists claimed were secret organizations planning uprisings that would cause their Black domestic employees to turn against them. It turned out that, of course, they were just rumors started by segregationists, who expressed fear of having to work in the kitchen or pay higher wages.

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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.

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With the earliest known recipes dating back thousands of years, bread is an engine of history. Its discovery may have kick-started humanity’s transition into an agrarian society, its chemistry created new foods and beverages intimately tied to the cultures that made them, and its availability has often been directly proportional to the rise and fall of kingdoms and empires. Learn more about everyone’s favorite starch-filled staple with these six amazing facts about bread, from the chemical reactions occurring in your oven to the world-changing events it inspired.

Close-up of prepared dough for baking buns or other bakery products.
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Bread Is Made From Fungi

The single-celled organism known as yeast is the engine behind the bread-making process. Once this microscopic fungi is fed simple sugars, the yeast essentially burps up carbon dioxide and ethanol, along with flavor molecules, in a process known as fermentation. This buildup of CO2 and alcohol is what causes bread to rise, and evidence of these gassy expulsions can be found in the holes that form in baked bread. Sourdough starters are made by mixing flour and water and allowing natural yeasts (which can be found in the very air we breathe) to start munching on the carbohydrates. These starters, which are essentially live organisms, can live indefinitely if fed and stored properly. More than 130 of them, from 23 countries, live at the Puratos Center for Bread Flavour in Belgium — the world’s only sourdough library.

Breadcrumbs trail in the forest.
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The Earliest Evidence of Bread Is 14,000 Years Old

In 2018, archaeobotanists from the University of Copenhagen were working in an excavation site in Jordan, an area where a hunter-gatherer tribe known as Natufians lived some 14,000 years ago, when they stumbled upon bits of charred food remains. After closer examination in a laboratory, it became clear that these were bits of breadcrumbs from a time millennia before scientists had believed bread-making really took off. The news was particularly surprising because scientists usually see bread-making as a result of the rise of agriculture, the innovation largely responsible for forming modern society. However, this discovery suggests that it could be hunter-gatherers’ preexistent interest in bread-making that inspired the rise of agriculture — not the other way around.

light wheat beer pouring into a glass.
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Bread Is the Main Ingredient in the World’s Oldest-Surviving Beer Recipe

Bread has been central to our diet for several thousand years, and it’s also been central to our social life. Written in 1800 BCE, the “Hymn to Ninkasi” details a step-by-step recipe for Sumerian beer-brewing in Mesopotamia (modern-day Iran). The text describes the ingredients involved in the process, most crucially the beer bread known as bappir that introduced the required yeast for fermentation.

In 1989, San Francisco’s Anchor Brewing Company recreated the Sumerian concoction, deeming the resulting beverage “drinkable.” Although the “Hymn to Ninkasi” is the oldest-known beer recipe, it’s likely that one of the world’s most popular alcoholic beverages has an even older origin story. Traces of beer in jar fragments have been dated to around 3500 BCE, and some archaeologists expect beer could be as old as — or even older than — bread itself.

The Storming of the Bastille on 14 July 1789, circa 1789.
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Bread Helped Ignite the French Revolution

Bread can be a major player in world events — and events don’t get much bigger than the French Revolution. This transformative moment in the late 18th century was triggered by multiple forces, including changing philosophies, gross inequalities, and a bankrupt monarchy, but some experts argue that the spark that ignited the revolution might have been bread, or more specifically the lack thereof. France’s rising population, heavily grain-based diet, and inability to keep up with demand led to a crisis of bread scarcity that bled into popular outrage. An English agriculturalist traveling through France at the time even commented that “the want of bread is terrible; accounts arrive every moment from the provinces of riots and disturbances, and calling in the military, to preserve the peace of the markets.”

In fact, one of the French Revolution’s most famous anecdotes belongs to France’s Queen Marie Antoinette, who upon hearing of the peasants’ struggle for bread, supposedly replied, “Let them eat cake.” Although historians believe the queen never actually uttered these words, the famous line exemplifies the suffering of the French people and the perceived indifference of its government.

Bread crumbs on a white table.
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Before the Invention of the Eraser, People Used Bread Crumbs

Although the very first mass-produced pencils arrived on the scene in the 1600s, English scientist Joseph Priestley (discoverer of oxygen) didn’t describe “caoutchouc,” or rubber, as an excellent material for “wiping from paper the mark of black lead pencil” until 1770. (Priestley was the one who renamed it “rubber,” because it could be used to rub out marks.) Before the arrival of the rubber eraser, people often used small pieces of lightly moistened bread to erase pencil mistakes. However, these bread-based erasers succumbed to mold, and eventually, rot. Let’s just say the rubber substitute was a welcome innovation.

Fresh variety of breads sliced.
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Sliced Bread Was Invented in 1928

“The best thing since sliced bread” is a phrase celebrating the most glorious of innovations — but it turns out, sliced bread itself isn’t even a century old. The first bread slicer was invented by Otto F. Rohwedder, who worked on his machine for 16 years before it was first used by a small bakery in Chillicothe, Missouri, in 1928. Rohwedder’s invention went against the common thinking among bakers who believed that sliced bread would go stale too quickly. However, customers proved this conventional wisdom wrong, and the bakery’s sales reportedly increased by 2,000% in just a couple of months.

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 isabel kendzior/ Shutterstock

Polar bears hold a Guinness World Record as the largest carnivore on land. These apex predators of the Arctic can weigh up to 1,700 pounds, measure 8 feet from nose to tail, and take down a walrus if they’re really hungry. But the great white bears also appear cuddly enough to star in Coca-Cola commercials and climate change campaigns. Here are a few key facts about these powerful animals.

Close-up of a swimming polar bear underwater looking at the camera.
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Polar Bears Are Marine Mammals

Along with their finned and flippered comrades, polar bears are considered marine mammals, which the National Oceanic and Atmospheric Administration defines as mammals that depend on oceans to thrive. Four taxonomic groups fall under this umbrella: whales, dolphins, and porpoises (Cetacea); manatees and dugongs (Sirenia); seals, sea lions, and walrus (Pinnipedia); and marine “fissipeds” (meaning “split-footed”), including polar bears and sea otters. Polar bears are also covered by the federal Marine Mammal Protection Act, which makes it illegal to harass or kill them unless human lives are threatened.

Photo of polar bears in Canada.
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Polar Bears Are Well Adapted to Living in the Cold

Polar bears have evolved unique characteristics to survive in frequently frigid regions across Alaska, northern Canada, Greenland, and Siberia. They have translucent fur and black skin; the former lets sun penetrate the bears’ thick coats, and the latter absorbs maximum heat to keep the animals toasty in subzero temps. Underneath a bear’s hide, a four-inch-thick layer of blubber insulates its core. Polar bears also have gigantic paws — up to 12 inches in diameter — that give them stability as they walk over ice, and act like paddles when they swim. Nictating membranes (sometimes called third eyelids) help them see better underwater.

Polar bears asleep in the snow.
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They Don’t Hibernate

Bears in more temperate parts of the world hibernate to save energy during the lean winter months; they gorge on food during summer and early fall, then snuggle into a den until spring. You might expect polar bears to hunker down and try to snooze through the coldest stretch of the Arctic winter, too. But because their food sources — seals, fish, seabirds, and even whale carcasses — remain available all year, they have no need to hibernate. Winter is actually the best time for polar bears to grab a meal. The sea ice, which the bears use like a platform to move from place to place, reaches its greatest extent and thickness in that season, making hunting easier. Only pregnant female polar bears retire to dens for the purpose of giving birth and nursing cubs.

Polar Bear eating in Greenland.
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Polar Bears Hunt by Stealth

Polar bears have perfected a hunting method that is both sneaky and deadly. A hungry bear will sniff the air to locate a seal resting on an ice floe, then quietly slip into the water. With only its snout above the surface, the bear will paddle closer to its prey, weaving around chunks of floating ice until it is within striking distance. The bear will then leap out of the water and try to grab the seal before it can roll into the sea. The BBC Earth program The Hunt filmed a polar bear following its prey as it escaped into the water, then coming up several minutes later with the seal in its jaws. The bears also stalk seals on the sea ice with cat-like intensity.

polar bear on melting ice float in the arctic sea.
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Arctic Warming Threatens Polar Bears’ Survival

Polar bears are often held up as the poster children of climate change. The Arctic is warming up to four times faster than the rest of the world, which has caused the yearly amount of sea ice to shrink (the 10 lowest amounts recorded by satellite have all occurred in the last two decades). Less sea ice means polar bears have a harder time traveling between hunting grounds and successfully stalking prey. They also have fewer places to rest, dig dens, and raise cubs. Scientists are now seeing polar bear populations that live mainly on sea ice decrease, while those closer to land are slightly increasing.

Canada, Manitoba, Churchill, 'polar Bear Capital Of The World' Sign.
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One Canadian Town Is Dubbed “the Polar Bear Capital of the World”

Churchill, Manitoba, sits on the western coast of Hudson Bay — smack dab in the path of polar bears’ migration routes. Every summer, hundreds of bears gather around Churchill as they wait for the bay to freeze solid and herald their winter hunting season. Local guides offer polar bear viewing safaris in safely enclosed “tundra buggies” that look more like tanks. The presence of so many bears can sometimes result in unpleasant interactions with humans, so the town maintains the Polar Bear Control Program and an emergency hotline (204-675-BEAR) to protect both people and animals. Bears that get too close for comfort are temporarily removed to the area’s Polar Bear Holding Facility to await the bay’s freeze-up.

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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.

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Your heart is the hardest-working muscle in your body. It pumps blood 24 hours a day, seven days a week, for as many as nine or 10 decades without a break. For thousands of years, people have thought of the heart as intertwined with the soul, due to the organ’s faithful beating and power to keep us alive. Here are a few fascinating facts about the human heart.

Doctor holding artificial heart model.
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The Human Heart Pumps About 5 Liters of Blood per Minute

The average resting heart rate for an adult is 60 to 100 beats per minute. With each beat, 55 to 80 milliliters of blood are pushed from the right and left atria (the heart’s upper chambers) through valves to the right and left ventricles (the lower chambers), and then out to the lungs and other parts of the body. A person’s total cardiac output is determined by multiplying the number of beats per minute and the volume of blood pumped per beat. While the heart of an adult sitting on the couch moves between 5 and 6 liters (1.3 to 1.5 gallons) of blood every minute, an elite athlete in a 100-meter dash might pump up to 35 liters (over 9 gallons) in that time.

Human and heart spirit energy connect to the universe.
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The Heart and the Soul Have Been Connected for Millennia

Ancient philosophers in Egypt, Greece, the Islamic world, and elsewhere believed the heart was the “seat” of the human body and the home of the soul. When preparing a corpse for mummification, Egyptian embalmers removed every organ except the heart. The influential Greek physician Galen wrote that the heart was “the hearthstone and source of the innate heat by which the animal is governed,” a (false) concept that lingered well into the 17th century. In contrast, Norse people believed the physical characteristics of the heart revealed a person’s courage or cowardice, and the smaller and colder it was, the braver its owner. Though English physician William Harvey discovered the heart’s true physiological role in the circulatory system in 1628, the metaphysical links between the heart and soul remain strong in the minds of many.

Dr. Christiaan Barnard's surgical team performing an open heart surgery.
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The World’s First Successful Human Heart Transplant Was a Worldwide Sensation

Surgeons in the U.S. and Europe began to conduct heart transplants in animals in the early 20th century, but the first procedure on a human subject didn’t take place until 1964. In that operation, a chimpanzee’s heart was transplanted into a critically ill man who did not survive for long. Three years later, the first successful human-to-human heart transplant was performed at a South African hospital by Dr. Christaan Barnard and his team. Within hours, international media had picked up the story. Barnard appeared on the covers of TIME, LIFE, and Newsweek, while millions around the world followed the recovery of the patient, Louis Washkansk. Sadly, he passed away after 18 days. The procedure has been called “one of the most famous events of the 20th century” and “the most publicized event in world medical history.”

 Cardiogram Chart (ECG).
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The Human Heart Runs on Electricity

The heart’s cardiac conduction system — specialized cells that work like an electrical generator — tells the heart when and how fast to beat. First, pacemaker cells in the sinoatrial (SA) node send out an electrical signal that cascades down the left and right atria, causing the chambers to contract. That squeezes blood through the mitral and tricuspid valves into the left and right ventricles. Another group of pacemaker cells in the atrioventricular (AV) node sends out another signal telling the ventricles to start contracting, which pushes the blood through two more valves and out to the body. Then the SA node shoots out a fresh signal, and the process repeats.

Pregnant woman and doctor with sonogram image.
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It’s a Myth That Heart Rate Can Reveal the Sex of an Unborn Baby

The heart is the first organ to develop in a human embryo. The earliest rudimentary form of the muscle, called the tubular heart, starts beating about three weeks after conception (though a 2016 study suggested it could be even earlier — about 16 days after conception). By the fifth week of gestation, a healthy fetus’s heart rate averages 110 beats per minute, increasing to 170 beats by the ninth week. It slows to 150 beats on average by the 13th week. It was once thought that an unborn baby’s sex could be determined based on its heart rate as detected by an ultrasound, but studies have shown there is no significant difference between boys’ and girls’ fetal heart rates.

3D illustration of a human heart.
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Scientists Have Grown a Beating “Mini-Heart” in a Lab

In a slightly Frankensteinian breakthrough, Austrian researchers built a fully beating “mini-heart” in a laboratory in 2015 to learn more about how the human heart develops in utero. The sesame seed-sized organoid, designed to mimic the activity of a 25-day-old human embryo’s heart, was meant to give researchers a better model for studying how congenital heart defects occur. Previously, experiments had relied on animals.

Bodleian curator Stephen Hebron holds a new portrait of Mary Shelley.
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Mary Shelley Kept Her Husband’s Heart After His Death

Speaking of Frankenstein: The novel’s author, Mary Shelley, had her own brush with a disembodied heart. Following the drowning death of her husband, poet Percy Bysshe Shelley, his body was cremated — but his heart allegedly did not burn. It was retrieved from the fire and given to Mary Shelley, who kept it in her writing desk. It was finally buried with the body of their son, Percy Florence Shelley, in 1889.

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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.

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Most of us are familiar with the story of the first telephone call: On March 10, 1876, Boston University professor Alexander Graham Bell reached for the curious invention on his desk, rang up his trusty assistant, and said, “Watson, come here… I want you to look at this text.”

OK, maybe not quite. But the moment did mark a seismic change in the history of communications — the birth of a creation that enabled people to bridge the gap across towns, cities, countries, and eventually the world, before being repurposed as a means for sending misspelled messages and watching silly videos. Here are six facts about the ubiquitous, sometimes irritating, but nevertheless remarkable telephone.

Businessmen watch inventor Alexander Graham Bell opens the New York-Chicago telephone line.
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Bell Wasn’t the First To Build a Working Phone

While Alexander Graham Bell is known as the “father of the telephone,” he wasn’t the first to conceive of its existence. Italian-born inventor Antonio Meucci and the German physicist Johann Philipp Reis had both previously fashioned functional sound-transmission devices, and Illinois inventor Elisha Gray submitted a “patent caveat” — a type of preliminary application meant to essentially save one’s space in line — for his version of the phone on the very same day that Bell filed his patent. Gray eventually launched a protracted legal battle for the rights to the patent, but the U.S. Supreme Court ruled in favor of Bell in 1888.

Close-up of buttons on a telephone.
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Telephone Numbers Were Once Controversial

Telephone numbers were first used in 1879, after a measles epidemic hit Lowell, Massachusetts, keeping many of the local switchboard operators — on whom the earliest telephone systems depended — out of work. The response was to designate phone subscribers by number, allowing new operators to quickly get up to speed without knowing the hundreds of local subscribers by name, although management initially worried that customers would object to numerical identification as dehumanizing. In the 1960s, after most American communities had adopted an alphanumeric system that included the name of the local exchange, customers did indeed balk at the switch from the alphanumeric system to all-digit phone numbers, with organizations such as the Anti-Digit Dialing League emerging to remind the phone overlords that human beings existed within the sea of numbers.

Pay phones against the wall.
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The First Pay Phone Appeared in the 1880s

A 19th-century Connecticut machinery polisher named William Gray endured a scare when he was unable to access a phone to call a doctor to treat his ailing wife. The good news: His wife recovered, and the experience drove Gray to develop a coin-operated phone that would be available to the public, and not just those who could afford an expensive private subscription service. His first pay phone appeared in a Connecticut bank in 1889, and by 1902, there were approximately 81,000 such contraptions around the country. That number swelled to 2 million by the end of the century, before reversing as cellphone ownership became commonplace — leaving only about 100,000 remaining pay phones to be found by 2018.

The automatic telephone exchange in a telecommunications rooms.
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A Disgruntled Undertaker Created the Automated Phone Exchange

Around the same time that Gray was tinkering with his pay phone, a Kansas City undertaker named Almon B. Strowger was looking to circumvent the operators he felt were diverting would-be customers to a competing business. The solution was an electromagnetic-powered automated exchange, which earned a patent in 1891 and was up and running in La Porte, Indiana, the following year. Although the operator workforce continued to thrive into the next century, their population began to dwindle with the onset of improved automated technology in the 1930s. By 2021, there were reportedly just 5,000 employees classified as “telephone operators” by the U.S. Bureau of Labor Statistics.

Old 90s classic analog mobile flip phone.
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The First Cellphone Call Was Placed in 1973

The first mobile telephone call took place on June 17, 1946, from a car stocked with 80 pounds worth of transmission equipment. However, the handheld cell as we know it can be traced to the work of Motorola executive Martin Cooper, who demonstrated his company’s prototype with a call from a Midtown Manhattan street on April 3, 1973. The first cellphone hit the market 11 years later, in the form of the Motorola DynaTAC 8000X, a 2-pound behemoth that offered customers the chance to talk uninterrupted for 30 minutes (following a 10-hour charge time) for the whopping price of $3,995.

An original IBM Simon Personal Communicator.
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The First Smartphone Was Introduced in 1992

The next major evolutionary step in phone history came with the introduction of IBM’s Simon Personal Communicator in 1992. A cellphone capable of sending and receiving pages, faxes, and emails, it was the world’s first smartphone, even if the term hadn’t been coined yet. As with many technological trailblazers, Simon was oversized, expensive, and short-lived. Following the phone’s commercial release in August 1994, IBM sold only about 50,000 units before discontinuing the product early the following year. But there was no going back on the idea, and by early 2023, there were more than 6 billion smartphone subscribers around the world.

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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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There’s more than one way to go hunting for Easter eggs. When it comes to movies, you can find them all over the place — and not just on a specific day of the year. Filmmakers have been hiding subtle hints, messages, and references in their movies for almost as long as they’ve been making movies at all, often as a wink-wink allusion to other movies they themselves love. You usually have to look carefully to notice them, but once seen they can’t be unseen. Here are six of them.

Barbie standing in a barren landscape.
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2023: A Barbie Odyssey

Some Easter eggs are subtle, while others are… less so. Greta Gerwig’s massively popular Barbie, which is all but certain to become the highest-grossing film of the year at the time of writing, opens with one of the not-so-subtle variety. As little girls play with old-fashioned dolls in a barren landscape, the narrator (Helen Mirren) intones about how things will soon change with the arrival of a new doll: Barbie (Margot Robbie), who appears out of the ether as Richard Strauss’ “Also sprach Zarathustra” plays. It’s a direct callback to the opening credits and first sequence of Stanley Kubrick’s 2001: A Space Odyssey, which likewise heralds the dawn of a historical event with massive implications for the future of humanity as that famous piece of music reaches its crescendo.

Samuel L. Jackson in Captain America.
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The “Pulp Fiction” Epitaph in “Captain America: The Winter Soldier”

Among the many quotable scenes in Pulp Fiction, one has proved especially popular over the years: Samuel L. Jackson’s recitation of Ezekiel 25:17. Jackson plays a hitman who quotes the Bible before doing his victims in, using the passage as a kind of calling card:

The path of the righteous man is beset on all sides by the inequities of the selfish and the tyranny of evil men. Blessed is he who in the name of charity and good will shepherds the weak through the valley of darkness, for he is truly his brother’s keeper and the finder of lost children. And I will strike down upon thee with great vengeance and furious anger those who attempt to poison and destroy my brothers. And you will know my name is the Lord when I lay my vengeance upon thee.

The sequence is so iconic, in fact, that the makers of Captain America: The Winter Soldier decided to reference it when Nick Fury, also played by Jackson, fakes his death. As the ruse requires a tombstone, the epitaph reads, “Col. Nicholas J. Fury: ‘The path of the righteous man…’ —Ezekiel 25:17.” Given how fond Pulp Fiction writer-director Quentin Tarantino is of alluding to other movies, it only makes sense for other filmmakers to reference his work.

Film director Quentin Tarantino, portrait, standing by a poster for his film Pulp Fiction.
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Into the Tarantino-Verse

Speaking of Tarantino, it isn’t just other filmmakers whose work he references — it’s also his own. Many of the Oscar-winning writer-director’s works take place in a shared universe, with brands like Big Kahuna Burger and Red Apple cigarettes popping up in several of his films. There’s also the fact that Michael Madsen’s character in Reservoir Dogs and John Travolta’s character in Pulp Fiction are brothers: Vic and Vincent Vega, respectively, about whom Tarantino was at one point developing a spinoff.

Perhaps the deepest connection is between Pulp Fiction and Kill Bill, as the TV pilot that Mia Wallace (Uma Thurman) starred in, Fox Force Five, in the former bears a striking resemblance to the female assassins in the latter. “There was a blond one, Somerset O’Neil, she was the leader,” Mia says of the show. “The Japanese fox was a kung fu master. The Black girl was a demolition expert. The French fox’s speciality was sex… according to the show, [my character] was the deadliest woman in the world with a knife.” These archetypes align strongly with the women of Kill Bill, a connection made even stronger by the fact that The Bride (also played by Thurman) titles her hit list “Death List Five.”

FIGHT CLUB scene, 1999.
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The Starbucks Cups in “Fight Club”

The first rule of Fight Club is: You do not talk about Fight Club. The second rule of Fight Club is: When breaking the first rule, be sure to point out that almost every shot in Fight Club features a Starbucks cup. David Fincher’s cult classic, an adaptation of Chuck Palahniuk’s counterculture novel of the same name, has become an anti-establishment rallying call since it first hit theaters in 1999. Few companies symbolize the kind of corporate ubiquity the film satirizes quite like the coffee behemoth, leading Fincher to feature their instantly recognizable cups throughout. Somewhat surprisingly, Starbucks approved of this: “They read the script, they knew what we were doing, and they were kind of ready to poke a little fun at themselves,” Fincher said.

Judy Garland in The Wizard of Oz.
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He’s Off to See the Wizard

You might love The Wizard of Oz, but you probably don’t love it as much as David Lynch. The revered filmmaker behind favorites such as Blue Velvet, Twin Peaks, and Mulholland Drive, who has earned four Oscar nominations throughout his storied career, has sprinkled references to the Judy Garland classic in several of his films. The most overt comes in Wild at Heart, when an effervescent figure bearing a strong resemblance to Glinda the Good Witch descends from the sky, but it’s far from the only Easter egg. Lynch also has a habit of naming characters Judy and featuring red shoes in his movies, even once admitting, “There’s not a day that goes by that I don’t think about The Wizard of Oz.” The connection is so strong that it recently became the subject of a documentary, the appropriately named Lynch/Oz.

RAIDERS OF THE LOST ARK film (1981).
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These Are the Droids You’re Looking For

Raiders of the Lost Ark was directed by Steven Spielberg, but it was dreamt up by George Lucas shortly after he finished American Graffiti in 1973. The blockbuster starring Harrison Ford as Indiana Jones was eventually produced by Lucasfilm, with the production company’s namesake receiving a story credit, so it makes sense that the final product would contain a blink-and-you’ll-miss-it allusion to his best-known work: Star Wars. When Indy finally finds the Ark of the Covenant near the end of the film, a set of hieroglyphics can be seen to his right that depict R2-D3 and C3PO. It isn’t the only Star Wars Easter egg in the series, as the opening scene of Indiana Jones and the Temple of Doom takes place in Club Obi Wan.

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Whales are among the most magnificent animals on Earth, a throwback to the enormous creatures that once graced our planet and largely disappeared before we had the chance to witness them. Yet they also remain mostly mysterious, like the vast oceans that house them, a collection of distantly observed giants that exhibit both puzzling and relatable behaviors that hint at an intelligence to rival ours. With so much more to learn, here are nine things we do know about the massive, marvelous whale.

Humpback Whale entering the water.
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There Are Two Types of Whales

As members of the cetacean order, whales are grouped into two suborders: baleen whales (mysticetes) and toothed whales (odontocetes). The former are named for the plates attached to their upper jaws, called baleen, which enable the blue whales, right whales, humpbacks, and others in this category to trap tiny fish and crustaceans in their huge mouths. Toothed whales, as you may have guessed, possess teeth to grab hold of larger prey like fish, squid, and seals, which are then swallowed whole. This suborder includes sperm whales, dolphins, and narwhals, which famously feature a hornlike tooth protruding from their lip.

A Pakicetus skeleton cast.
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The First Whales Lived on Land

The first cetacean was a wolf-sized, land-dwelling carnivore called Pakicetus, which bore little resemblance to today’s whales beyond the shared skull shape and ear structure. First appearing in modern-day Pakistan approximately 50 million years ago, Pakicetus soon spawned descendants that were better suited for marine life; by the arrival of Dorudon (an extinct species of ancient whale) around 40 million years ago, some of these mammals had already adapted to life underwater. Further along the evolutionary line, baleen whales first appeared approximately 34 million years ago, while the colossal growth that characterizes some whale species began occurring concurrently with cooling climates some 4.5 million years ago.

Aerial view of a fin whale.
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Whales Range From 5 Feet to Nearly 100 Feet Long

Although they subsist on smaller prey, baleen whales are generally larger than their toothed counterparts. The blue whale reaches dimensions of nearly 100 feet long and almost 200 tons, making it the largest animal on the planet (although it may no longer hold the title of largest animal ever). The fin whale stretches to nearly 90 feet, with a maximum weight of about 80 tons, while the sperm whale is the largest of the toothed variety at up to 60 feet in length and 63 tons. At the other end of the spectrum is the compact vaquita, a nearly extinct porpoise that lives in the Gulf of California and tops out at about 5 feet and 120 pounds.

A sperm whale in the Indian Ocean.
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The Sperm Whale Has the Largest Brain of Any Animal

Whales have some of the biggest brains of any creatures on the planet, highlighted by the 20-pound organ residing in the skulls of sperm whales (the biggest brain overall of any species). Of course, this is in large part due to the sheer size of these creatures, and humans still come out ahead when comparing brain-to-body-size ratio. Nevertheless, whale brains have been found to have spindle neurons, the nerve cells responsible for more complex functions like reasoning, memory, and adaptive thinking. Given that whales have been shown to live in complex societies and exhibit a wide range of emotions, it’s likely that these plus-sized brains are also a sign of high levels of intelligence.

A male humpback whale breaching off tropical island water.
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Whales Breach the Ocean Surface as a Way to Communicate

Breaching — the term for when a marine animal propels its body up and out of the water — is always a crowd-pleaser on whale tours, even if the reason for this energy-consuming behavior isn’t well understood. Scientists who studied the habits of humpback whales concluded that breaching can be used as a means of long-distance communication, as the humpbacks under examination mostly engaged in this activity when another group was more than 4,000 meters away. Other possible explanations for breaching include a display of fitness for mating, a means of ridding the skin of parasites, or simply a way to have some fun.

Beached whale with human help.
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Whales Can Find Themselves Beached for Numerous Reasons

Not to be confused with breaching, beaching is also an eye-catching cetacean event that results when these sea-dwellers wash ashore. A fate befalling old, sick, or injured individuals that are too weak to swim to safety, beaching can also occur among healthy whales seeking to escape predators, or those that simply get trapped in shallow areas when tides recede. Although orcas are known to propel themselves onto shores to hunt for seals, beaching is generally bad news for the animal involved. Outside its natural environment, a whale can overheat from its thick blubber and succumb to the toxins that accumulate from diminished circulation.

A baleen grey whale emerging from the water.
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Male Humpback Whales Produce Evolving “Songs”

Toothed whales are known to emit clicking sounds as part of their echolocation abilities to identify other underwater objects. Baleen whales (which don’t use echolocation) deliver both low-frequency moans and higher-frequency whistles. But perhaps the most interesting noises from the whale family are the “songs” produced by male humpbacks. A series of repeating growls, bleats, and wails, these songs can last up to a half-hour in length, and are sometimes vocalized on a seeming loop for hours on end. Additionally, humpback songs have been shown to evolve into different tunes over time as members of a group repeat and put their own creative flourishes on the sequences.

Humpback Whale in the waters of Hawaii.
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Whales Are Biologically Suited to Hold Their Breath for a Long Time

While many of us would struggle to stay underwater for more than 15 seconds, whales are proven champions when it comes to holding in air for lengthy dives to the ocean floor. This is thanks to bodies that produce high levels of proteins like hemoglobin and myoglobin, which enable the mammals to store oxygen in their muscles and blood. Additionally, diving whales will lower their heart rate and cut off blood flow to organs such as the liver and kidneys to conserve oxygen. With these physiological superpowers at their disposal, whales have been recorded remaining underwater for as long as 222 minutes, and reaching a depth of nearly 10,000 feet.

Humpback Whale Migration.
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Whales Can Migrate More Than 10,000 Miles in a Year

Some whales undertake mind-boggling migrations from polar to tropical climates that can cover more than 10,000 miles in a round trip. Many of these migratory patterns follow food-birth cycles, as the animals dine in nutrient-rich northern waters during the summer months before moving south to produce their young in gentler climates during winter. Recently, scientists have added the credible explanation that whales also head south to expedite a molting process that comes to a standstill in colder environments. Yet migratory patterns can be irregular even among whales of the same species, with some electing to forgo the long journeys undertaken by their companions, proving once again that there’s no fitting these animals neatly into a box when it comes to explaining their sophisticated behaviors.

Interesting Facts
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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.