Original photo by josepponsa/ iStock

It might sound like a trick question: How many gallons of water does a 10-gallon hat hold? Turns out, not even one. The famous piece of Western wear can only contain about 3 quarts of water — that’s a mere three-quarters of a gallon. (Hatmakers advise against double-checking this figure at home, since complete saturation isn’t kind to felt and fur hats.) There’s no clear origin for the misleading 10-gallon name, but some linguists believe the term stems from cross-cultural confusion. One theory holds that American cowboys picked up the name while working alongside Spanish-speaking cattlemen, many of whom wore wide-brimmed hats with decorative galóns (aka braids). The most elaborate of these featured band upon band of detailing — as many as 10 hatbands. Another theory suggests that “10-gallon” was an anglicized version of tan galán, a Spanish phrase meaning “very handsome,” used to describe cowboys as they rode off into the sunset and the like.

An American gallon is smaller than a British gallon.

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Americans and Brits used to calculate gallons the same way, but in 1824 the U.K. adopted the imperial gallon, which equates to 277.42 cubic inches of water. The American gallon is 231 cubic inches of water — which means it’s about 20% smaller.

Western films of the early 20th century primarily outfitted actors in 10-gallon hats, though those depictions weren’t historically accurate when it came to reenacting the Old West. With their large brim and tall crowns, 10-gallon hats can easily catch the wind or attract attention, making them an impractical choice for ranchers and outlaws alike. Derby (aka bowler) hats were actually the most commonly worn men’s hat until the mid-to-late 1800s, after hatmaker John Batterson Stetson released his first cowboy hat, called the “Boss of the Plains.” His version was inspired by the original 10-gallons but could withstand the elements. It became popular on ranches, movie sets, and even at the White House.

Numbers Don't Lie

Numbers Don't Lie

Year John Batterson Stetson launched his iconic brand of cowboy hats
1869
Original cost of the Stetson “Boss of the Plains” hat in felt
$5
Height (in feet) of the world’s tallest hat, debuted in Florida in 2018
15.75
Price of a cowboy hat worn by actor John Wayne, sold in 2011
$119,500

The first Western film, “The Great Train Robbery” (1903), was only ______ minutes long.

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The first Western film, “The Great Train Robbery” (1903), was only 11 minutes long.

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Tom Mix, Hollywood’s first Western movie star, appeared in more than 300 films.

Before John Wayne and Clint Eastwood became Hollywood superstars thanks to their roles in Western films, another on-screen cowboy dominated the genre: Tom Mix. The Pennsylvania-born actor appeared in his first film in 1909, beginning a career that would be bedazzled by iconic Western wear, including an oversized Stetson 10-gallon hat. Mix was also known for performing his own stunts, a feat he was able to accomplish thanks to his experience as a cowhand and a member of the Texas Rangers. He would go on to star in more than 300 screenplays, the majority of them silent films, and by 1928 was Hollywood’s highest-paid actor. Mix’s career dwindled as “talkie” pictures rolled around, but he continued his showbiz career with a second act as a rodeo and circus star until his death in 1940.

Nicole Garner Meeker
Writer

Nicole Garner Meeker is a writer and editor based in St. Louis. Her history, nature, and food stories have also appeared at Mental Floss and Better Report.

Original photo by piemags/nature/ Alamy Stock Photo

Wildfire can be devastating for humans and wildlife, yet some plant species rely on fire as a vital part of their life cycle. Known as fire followers, those species have evolved to take advantage of landscapes cleared by flames. 

Take, for example, the fire poppy (Papaver californicum), a delicate orange-red wildflower that emerges almost exclusively after wildfires in California’s chaparral and foothills. Its seeds can lie dormant in the soil for decades, waiting for the precise combination of heat, smoke, and mineral-rich ash that only fire provides. When those conditions align, fire poppies bloom briefly and brilliantly, turning barren slopes into living proof that destruction can also bring renewal.

The University of California was the first college to offer a Bachelor of Science in fire ecology and management.

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It was the University of Idaho, not California, that became the first to offer the degree in 2007.

But that poppy isn’t the only plant to thrive in a fire-ravaged environment; fire followers exist in dry ecosystems around the world, from Australia’s savannas to the Mediterranean basin and South Africa’s fynbos biome. Fire removes dense vegetation, returns nutrients to the soil in the form of ash, and alters the chemistry of the ground and air in ways that signal it’s finally safe to grow.

Some fire-following plants respond to heat that cracks open tough seed coats, while others are triggered by compounds found in smoke. In the months after a burn, when competition for growing space lessens and sunlight floods the ground, those plants can suddenly appear in extraordinary numbers, transforming charred land into fields of colorful growth.

Numbers Don't Lie

Numbers Don't Lie

Species of poppy
~800
Years humans have been growing and using poppies
6,000
Year the Opium Poppy Control Act regulated opium poppy cultivation and distribution
1942
Percentage of U.S. wildland fires caused by humans from 1992 to 2012
84%

Only one species of poppy produces ______.

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Only one species of poppy produces opium.

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Ecologists have studied the relationship between fire and plant life for more than a century.

In the early 1920s, botanists observed that certain chaparral shrubs in California only sprout and produce fruit after a wildfire, uncovering the evolutionary connection between fire and plant reproduction. Those early studies helped lay the groundwork for fire ecology, the scientific field dedicated to understanding how fire influences ecosystems.

Fire ecologists examine how burns affect plant growth, nutrient cycling, seed dispersal, and interactions between species, revealing that fire is not just a destructive force but also a vital process for many landscapes around the world. Since those early observations, fire ecology has developed into a structured field of research. By the mid-20th century, scientists had begun studying how fire shapes vegetation patterns, soil chemistry, and ecosystem recovery.

Kristina Wright
Writer

Kristina is a coffee-fueled writer living happily ever after with her family in the suburbs of Richmond, Virginia.

Original photo by samoila ionut/ Shutterstock

Pigeons tend to have poor reputations, treated as winged pests that are shooed away from park benches and windowsills. However, these sometimes-annoying avians — which were first domesticated by humans at least 5,000 years ago — are also known for being adept messengers. That’s why police in Odisha, a coastal state in eastern India, have used pigeons to relay important messages in situations where modern lines of communication no longer work. About 150 homing, racing, and carrier pigeons make up the region’s pigeon patrol. They begin their training at just 5 to 6 weeks old, and can fly up to 500 miles at a time, at top speeds of 34 miles per hour.

Pigeons mate for life.

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Swans aren’t the only birds that should be known for their long partnerships — pigeons are also monogamous, generally selecting and staying loyal to one mate. Together, pigeon couples share the responsibility of raising up to 13 fledglings per year.

Fleets of carrier pigeons aren’t at all new to India. The feathered couriers were used throughout the country for centuries, and in more recent history by police stations during British colonial rule. Odisha launched its official bird messaging service in 1946 as an experiment, since the region had no telephone access. The program’s earliest pigeons were tasked with regularly transporting messages written on lightweight onion-skin paper between police stations in a state that spanned more than 60,000 square miles. Even with today’s accessible phone and internet services, there’s been no rush to retire the courier pigeons. While the birds tend to serve a ceremonial role during functions of state, handlers keep the pigeons trained and ready to respond in natural disasters when communication towers are wiped out, and the birds are believed to have helped save lives during catastrophic flooding in 1982 and in the aftermath of a super cyclone in 1999.

Numbers Don't Lie

Numbers Don't Lie

Number of letters a pigeon can learn from the English alphabet
26
Number of pigeon species found throughout the world
300+
Winning auction bid for Armando, the world’s fastest racing pigeon
$1.4 million
Population of India, the world’s most populated country, as of 2026
1.4 billion

Most pigeons are granivores, meaning they primarily eat ______.

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Most pigeons are granivores, meaning they primarily eat seeds.

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The last known passenger pigeon was named for Martha Washington.

The demise of the passenger pigeon has served as a century-long warning about the role humans play in the natural world. At one time, the species dominated the skies of North America, accounting for 25% to 40% of the entire American bird population. But by the early 1900s — following decades of overhunting and habitat destruction — only a few passenger pigeons survived in captivity. One in particular gained notoriety: Martha. Named for the nation’s original first lady, Martha Washington, the pigeon was housed at the Cincinnati Zoological Garden, where crowds regularly gathered to view the bird that would eventually become the last living passenger pigeon. Amazingly (and likely with the help of regular medical attention) Martha far surpassed her winged counterparts’ average lifespan of 15 years, living to the ripe age of 29. Today, it’s possible to still get a glimpse of her at the Smithsonian, where she has been taxidermied and is occasionally on display.

Nicole Garner Meeker
Writer

Nicole Garner Meeker is a writer and editor based in St. Louis. Her history, nature, and food stories have also appeared at Mental Floss and Better Report.

Original photo by cookelma/ iStock

In addition to invading picnics in the park, ants stage full-on conflicts with other ant colonies. Take the aptly named army ants — a term that applies to around 150 distinct species — which are among the many ant species, along with leafcutter ants and marauder ants, that fight each other for the purpose of territory or resource control. Research has shown those battles share striking similarities to human skirmishes, with ants relying on a combination of force, strategy, and chemical warfare to achieve victory.

Army ants have been observed advancing in tight phalanx formations that overwhelm opposing colonies with their sheer size. Some colonies send smaller numbers of scouts beforehand in search of food; those scouts then return to assemble a fighting force. Some species, such as the Matabele ant, even have some ants who essentially act like wartime medics, carrying injured ants away from the fight and tending to their wounds.

Ants can live up to 30 years.

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Female ants capable of reproduction, aka queen ants, are capable of living up to 30 years. This is as much as 500 times longer than the lifespan of male ants and roughly 10 times longer than that of nonreproductive female worker ants.

There’s also evidence of ants strategically deploying “weaponry” in battles with other ant colonies. For example, the Raspberry crazy ant secretes a substance that neutralizes fire ant venom, while door ants explode when threatened and spew toxins on enemies.

Other species, such as leafcutter ants, craft armor from magnesium calcite that helps them withstand oncoming attacks. Many ants also instinctively know when it’s time to retreat and fight another day, displaying an unwillingness to fight to the death in a losing situation — unless it’s for the purpose of defending their nest.

Numbers Don't Lie

Numbers Don't Lie

Estimated number of ants living on Earth
20 quadrillion
Length (in miles) of the largest contiguous ant colony
3,700
Worldwide box-office gross for the 1998 movie “Antz”
$171.8 million
Named species and subspecies of ants
15,700+

The oldest ant fossil, discovered in Brazil, is ______ years old.

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The oldest ant fossil, discovered in Brazil, is 13 million years old.

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A bullet ant’s sting is ranked among the most painful in the world.

The Schmidt sting pain index, created by entomologist Justin O. Schmidt, is a ranking of the most excruciatingly painful insect stings. Pain level one includes the sting of red, tropical, and southern fire ants, which Schmidt equated to being shocked by a light switch, as well as the sting of a bee. At the highest end of the spectrum is the bullet ant, which is the only ranked insect to hold a notorious four-plus pain rating.

Schmidt described the sting in his 2016 book The Sting of the Wild as “like walking over flaming charcoal with a 3-inch nail embedded in your heel.” Unlike other ant venom, which is commonly delivered by bite, a bullet ant delivers its venom using a wasplike stinger. While the sting isn’t fatal, it can lead to intense pain, muscle paralysis, and hallucinations that can last for up to 24 hours.

Bennett Kleinman
Staff Writer

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

Original photo by Mr.Kuiku/ Shutterstock

There are more than a million known asteroids in our humble solar system, most of which are fairly small and irregularly shaped. There are some outliers, however. Some asteroids are nearly spherical, and some are so big they have their own moons — around 150 of them are in this category, in fact. There are even binary and trinary asteroids that orbit one another like celestial twins and triplets, which surely makes hurtling through the vacuum of space less lonely than it would be otherwise. (In February 2022, astronomers even discovered a quaternary asteroid — 130 Elektra, which has three moons.) Like their moonless counterparts, the majority of these asteroids can be found in the asteroid belt between Mars and Jupiter, and are believed to be remnants from the creation of the solar system.

Every planet has at least one moon.

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Spare a thought for Mercury and Venus, which have a grand total of zero moons between them. Astronomers believe this is because they’re so close to the sun, which would likely capture any natural satellites orbiting them.

The first asteroid moon discovered was Dactyl, a mile-wide natural satellite orbiting the asteroid Ida and initially spotted in 1994. Other asteroids with moons include 45 Eugenia, 3122 Florence (which has two moons), and 87 Sylvia, which is roughly the same size as West Virginia and was the first trinary asteroid discovered. It’s also among the largest known asteroids in our solar system. As for the largest asteroid to ever hit Earth, it wasn’t the one that killed the dinosaurs (RIP). That distinction may belong to the asteroid that caused the Vredefort crater in South Africa, which once may have been around twice as large as it is now. A recent study concluded that the asteroid that made the crater may have been between 12.4 and 15.5 miles across when it made impact some 2 billion years ago. Hopefully, we won’t see one like it again any time soon.

Numbers Don't Lie

Numbers Don't Lie

Current known asteroid count as of January 2026
1,491,796
Broad classes of asteroids (C-, S-, and M-types)
3
Length (in miles) of the asteroid belt
140 million
Diameter (in miles) of Vesta, the brightest asteroid in the sky
329

“Asteroid” comes from a Greek word meaning “______.”

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“Asteroid” comes from a Greek word meaning “starlike.”

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The first asteroid ever discovered is now considered a dwarf planet.

If you find Pluto’s unjust trajectory from planet to dwarf planet hard to follow, wait until you hear about Ceres. Discovered on New Year’s Day 1801 by Guiseppe Piazzi at Sicily’s Palermo Astronomical Observatory, it was originally considered a planet before being reclassified as an asteroid in the 1850s — the first time we mere mortals realized that asteroids were a distinct class. Other early asteroids include Pallas (1802), Juno (1804), and Vesta (1807), all of which are smaller than Ceres — which is why the latter was reclassified again, this time as a dwarf planet, in 2006. In addition to Pluto and Ceres, the International Astronomical Union (IAU) recognizes three other dwarf planets: Eris, Makemake, and Haumea.

Michael Nordine
Staff Writer

Michael Nordine is a writer and editor living in Denver. A native Angeleno, he has two cats and wishes he had more.

Original photo by Peter Hermes Furian/ Alamy Stock Photo

“West Virginia” is a bit of a misnomer, as the bordering state of Virginia actually extends farther west than its neighbor. West Virginia’s westernmost point is located just north of the town of Fort Gay along the Big Sandy River in Wayne County. You’d need to travel another 55 to 60 miles west before reaching the western edge of Virginia, which is located in Cumberland Gap National Historical Park along a three-way border shared by Kentucky and Tennessee.

The origins of this oddity can be traced to the 1820s, when the land that is now modern-day West Virginia was still part of Virginia. At the time, many western Virginian communities (i.e., those west of the Great Appalachian Valley) felt underrepresented in the state legislature, which operated out of Richmond on the east side of the state. This disconnect came to a head when Virginia seceded from the Union in 1861 at the start of the Civil War — a choice many in the future state of West Virginia disagreed with — thus causing 39 western counties to secede from Old Dominion and form a new state.

Virginia is home to the world’s largest office building.

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The Pentagon, in the city of Arlington, was the world’s largest office building from 1943 to 2023, at 6.67 million square feet. But it was overtaken by the Surat Diamond Bourse (7.1 million square feet) in Surat, India. The Pentagon remains the largest office building in the United States.

The original proposed name was “the State of Kanawha” after a prominent river in the region. But many locals still held the name “Virginia” in high regard, so lawmakers voted in favor of “West Virginia” instead — though the name more aptly reflects cultural differences than it does precise geography. On April 20, 1863, President Abraham Lincoln proclaimed West Virginia would become the 35th U.S. state, and it formally achieved statehood on June 20 of that same year.

Numbers Don't Lie

Numbers Don't Lie

Acres in Virginia’s Shenandoah National Park
197,411
U.S. presidents born in Virginia (the most of any state)
8
Percentage of West Virginia covered by forest
78.5%
Year Virginia’s Jamestown Colony was established
1607

Virginia was named after ______, known as the “Virgin Queen.”

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Virginia was named after Queen Elizabeth I, known as the “Virgin Queen.”

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The same person served as both the youngest and oldest governor of West Virginia.

Cecil Underwood was elected to his first term as governor of West Virginia in 1956. He took office the following year at age 34, making him the youngest person to hold the Mountain State’s highest office. At the time, West Virginia’s constitution prohibited governors from serving consecutive terms (it was later amended in 1970 to permit it), so Underwood was forced to leave the governorship in 1961 after a single four-year term.

Underwood ran again in both the 1964 and 1976 West Virginia gubernatorial elections, though he was defeated each time. But his luck changed in 1996, when he was reelected to the office after more than three decades. He reclaimed the governorship on January 13, 1997, at the age of 74, becoming the oldest governor in the state’s history.

Bennett Kleinman
Staff Writer

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

Original photo by Piece of Cake/ Shutterstock

Some researchers have seemingly turned back time 2,000 years just by planting ancient seeds. Amazingly, a Judean date palm seed that was unearthed at a dig site in eastern Israel in the 1960s is today a thriving tree called Methuselah, named for the long-lived biblical patriarch. 

Some plants can launch their seeds.

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Many plants rely on the wind or animals to help disperse their seeds, but not all. Chinese witch hazel plants can launch their seeds nearly 60 feet. Scientists believe the plant evolved its propelling abilities to successfully spread without overcrowding its environment.

Archaeologists working at the ancient fort of Masada unearthed a handful of date palm seeds, using two for radiocarbon dating to confirm their age. The remaining excavated seeds sat in storage until 2005, when researchers at Israel’s Arava Institute took a chance on planting three of them. Only one of the seeds germinated, springing to life as the sole living example of its species, which likely went extinct around 500 CE. The experiment encouraged scientists to attempt more ancient plantings with date palm seeds found at other dig sites, and today the ancient-yet-young Methuselah has at least six companions that are as old as the Dead Sea Scrolls.

Methuselah has since grown into a healthy tree, making pollen that has successfully fertilized modern date trees and produced fruit. However, it’s not the oldest surviving seed to get a second chance. In 2012, Russian scientists unearthed 32,000-year-old seeds from Siberian permafrost. After extracting frozen plant tissue from the delicate seeds, researchers were able to successfully germinate and grow a relative of the modern-day S. stenophylla, aka the narrow-leafed campion — an achievement that could point the way to reviving other plants frozen in time.

Numbers Don't Lie

Numbers Don't Lie

Seed storage temperature (in degrees Celsius) at the Svalbard Global Seed Vault in Norway
-18
Approximate number of seed preservation banks found around the world
1,700
Rough number of seed catalogs archived in the Smithsonian, from 1830 to present day
10,000
Square miles of permafrost, which can contain ancient seeds, on Earth
8.8 million

The world’s largest seed bank, located in ______, stores more than 2.4 billion seeds.

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The world’s largest seed bank, located in England, stores more than 2.4 billion seeds.

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The world’s largest seed weighs as much as three bowling balls.

Seeds come in all shapes and sizes, though one tree’s offspring tends to tip the scales. Coco de mer palm trees produce seeds that can surpass more than a foot in length and weigh up to 55 pounds. The gargantuan trees are incredibly rare and considered endangered; they’re native to just two of the Seychelles’ 115 islands, and experts believe there are only about 8,000 mature coco de mer trees left. The palms are slow growers, taking up to 50 years before they’re able to reproduce — and when they do, their fruit ripens gradually over the course of 10 years. Scientists aren’t exactly sure why the coco de mer produces such sizable seeds, though some believe it could be to accommodate a generous amount of nutrients — enough to help the slow-growing seedlings in their quest to reach the forest canopy.

Nicole Garner Meeker
Writer

Nicole Garner Meeker is a writer and editor based in St. Louis. Her history, nature, and food stories have also appeared at Mental Floss and Better Report.

Original photo by Doug Kelley/ Unsplash

No animal on Earth travels quite like the eastern monarch butterfly. Its journey begins in the early days of spring on a few mountains in central Mexico. Millions of the monarchs (Danaus plexippus plexippus) fill the branches of oyamel firs, and as the temperature warms up, they soak in the sun and begin their epic journey northward — a 3,000-mile trip that looks more like a bird’s migration than an insect’s. 

The monarch butterfly is named after an actual monarch.

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When English colonists arrived in the Americas, they were enamored with its brightly colored orange butterflies. Legend has it that they named the creatures for Prince William of Orange (1650-1702), also known as King William III.

But it’s not only the miles that make the butterfly’s journey so remarkable — it’s also the means. A typical monarch butterfly lives for only about four weeks, not nearly long enough to complete the journey to the northern U.S. and Canada. So the migration becomes a multigenerational one. In a typical year, it will take four generations for monarch butterflies to finish the seasonal quest their great-grandparents started. To return south in the fall, a “super generation” — also known as the Methuselah generation (after the long-lived biblical patriarch) because it can live eight times longer than its ancestors — will travel 50 miles a day by riding thermal currents southward before finally resting in the same oyamel firs in central Mexico. All hail the monarch!

Numbers Don't Lie

Numbers Don't Lie

Area (in acres) monarch butterflies covered while wintering in Mexico in 2021
5.2
Number of monarchs that have ruled England and Britain over the past 1,200 years
62
U.S. interstate located in the central flyway of the eastern monarch migration path
35
Distance (in miles) of the longest yearly migration ever recorded, completed by an arctic tern in 2016
59,650

Monarch caterpillars survive thanks to a genus of plant called ______, which provides both food and habitat.

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Monarch caterpillars survive thanks to a genus of plant called milkweed (Asclepias), which provides both food and habitat.

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Mexican scientists are trying to move a forest to save the monarch butterfly.

Despite the monarch butterfly’s amazing resiliency, life isn’t easy for the 4-inch fluttering creature. Over the past 20 years, the number of eastern monarchs spending the winter in central Mexico has declined 80%, due to habitat loss, pesticides, and climate change. To combat this decline, researchers are planting saplings of the oyamel fir — the tree preferred by the butterflies while overwintering — some 1,300 feet higher than the current range in the Monarch Butterfly Biosphere Reserve in Michoacán, Mexico. The process is known as “assisted migration” or “assisted colonization,” and the hope is that cooler temperatures at higher elevations will help the trees survive a warming climate and secure a safe place for monarchs to hibernate and prosper.

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 solarseven/ iStock

No two planets are the same — even when it comes to their sunsets. As the sun dips below the horizon on Earth, the sky blossoms into warm hues of oranges, pinks, and reds. But that’s not the case everywhere in the galaxy. Sunsets, of course, have to do with the properties of the visible light spectrum, in which light takes on a variety of colors. Our sky appears blue, for example, because when light reaches the Earth’s atmosphere, gases (oxygen, carbon, and nitrogen) and molecules scatter the shortest wavelengths of light (violet and blue) the most. When the sun sets, it’s lower in the sky, and light travels farther through a denser atmosphere. As more of the light is scattered, the short blue wavelengths disperse, and more of the longer red and yellow wavelengths actually reach our eyes. 

Ash from volcanic eruptions dulls sunsets on Earth.

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Volcanoes inject sulfur dioxide into the atmosphere when they erupt. Because these aerosols introduce more obstacles in the atmosphere, only light at the far (i.e., red) end of the visible spectrum can make the journey, which in turn creates dazzling sunsets.

Although Mars is our planetary neighbor, its skies are almost completely the opposite. During the day, the skies above the red planet are, well, red, but at the end of a Martian day, a blue haze forms. Although the same physics are at work, the planets’ different atmospheres produce contrasting results. Mars’ atmosphere (or lack thereof) is mostly carbon dioxide and iron-rich dust. It’s this dust, made of larger particles than in Earth’s atmosphere, that scatters the light in different ways than on Earth, creating red skies during the day. When the sun sets, the Martian dust preserves more of the short blue wavelengths. In 2020, NASA applied this gaseous light physics to create a “sunset simulator” that shows off the end-of-day light displays on other planets, moons, and exoplanets — proving that the galaxy is indeed a kaleidoscope of color.

Numbers Don't Lie

Numbers Don't Lie

Sunsets astronauts aboard the International Space Station see every day
16
Year Lord Rayleigh (John William Strutt) demonstrated that a blue sky comes from scattering light
1871
Size of the sun in the Martian sky at sunset compared to its size at Earth’s sunset
2/3
Sunsets per year at the Earth’s geographical poles (occurring during the fall equinoxes)
1

In the Northern Hemisphere, sunsets are more vivid during the ______ season.

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In the Northern Hemisphere, sunsets are more vivid during the winter season.

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One day a ring may encircle Mars.

According to modeling produced by scientists at Purdue University in 2017, in 70 million years the Martian moon Phobos will reach the planet’s Roche limit, the point where objects are torn apart by tidal forces. Once this happens, a ring of debris will surround Mars, somewhat similar to the ring around Saturn (though to a less extraordinary degree). This theory also suggests that this won’t be the first time Mars has had rings. Over the past 4.3 billion years, Mars has likely gone through cycles of rings and moons. In the far future, Mars’ rings will once again coalesce and become a new moon, some five times smaller than Phobos.

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 Alena Kandratsyeva/ Unsplash

There’s more than one way to predict the weather. Anyone wary of their local news forecast can try something much simpler if they’d like to know whether or not it’s about to rain: Simply take a peek at some pine cones, which close in response to moisture in the air. 

They do this for the same reason they do everything else: to disperse their seeds as widely and effectively as possible, as pine cones are a means of reproduction for some trees. There are both male and female cones, and most of the ones we see are the latter — they produce seeds, whereas males produce the pollen that fertilizes female cones. Dry conditions are more conducive to speed dispersal, while dampness, well, dampens.

Pine cones only come from pine trees.

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Most coniferous trees produce cones, including firs, cypresses, and cedars.

Pine cone scales have several layers. If water drops make contact with the upper layer when the cone is open, the water then slides into the inner layer and causes it to expand. Once the scales begin to bend upward, they eventually curl shut. Then when the air becomes drier and the water inside the cone evaporates, the scales open up again. Pine cone seeds are designed to travel on the wind and can reach a distance of several hundred feet from their parent tree when conditions are ideal — which is to say, dry.

Numbers Don't Lie

Numbers Don't Lie

Maximum weight (in pounds) of a Coulter pine cone
11
Years a pine cone can stay on a tree before falling off
30+
Seeds produced by a Monterey pine cone
200
Maximum length (in inches) of a cone of the sugar pine, the largest pine species
24

The name of the protuberance at the end of a pine cone is ______.

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The name of the protuberance at the end of a pine cone is umbo.

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The location of the oldest tree in the world is kept secret.

There’s a good reason the oldest tree in the world is named Methuselah. The 4,857-year-old Great Basin bristlecone pine was named after a biblical figure who was said to have reached the age of 969, which would make him the oldest human who ever lived.

There’s also a good reason the tree’s exact location isn’t public information: The U.S. Forest Service wants to protect it from vandalism or worse. Located nearly 9,800 feet above sea level in the White Mountains of Inyo County, California, Methusaleh is believed to be the oldest living non-clonal organism on the planet. Inyo County doesn’t receive much precipitation, but when it does, you can be sure that Methusaleh’s pine cones close to keep dry.

Michael Nordine
Staff Writer

Michael Nordine is a writer and editor living in Denver. A native Angeleno, he has two cats and wishes he had more.