Curio Cabinet
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July 16, 2025
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8 minFREEWork Business CurioFree5 CQ
From the BBC World Service: The annual inflation rate in the United Kingdom clocked in higher than expected in the month of June, at 3.6%. Much of inflation'...
From the BBC World Service: The annual inflation rate in the United Kingdom clocked in higher than expected in the month of June, at 3.6%. Much of inflation'...
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FREEScience Nerdy CurioFree1 CQ
Stroll by a stream this summer, and you’ll almost certainly see these colorful sunbathers…even in places they’re not supposed to be. Red-eared sliders are some of the most common freshwater turtles on the planet, both in the wild and in pet stores, but they’re native only to the southeastern U.S. and northern Mexico. Beloved as they are in many places as a sign of sunny weather, these beautiful turtles wreak havoc as an invasive species in places as far away as Australia.
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Red-eared sliders are medium-sized, freshwater aquatic turtles. Females are slightly bigger than males, growing to around 12 inches long while males reach average lengths of just nine inches. Like many turtle species, they’re fairly long-lived, with a lifespan of around 30 years in the wild and up to 40 years in captivity. While baby red-eared sliders eat mostly insects, adults eat mostly aquatic plants, but they won’t pass up a chance to eat small fish or scavenge meat if the opportunity arises. Their varied diets make them adaptable to any environment with plentiful water and sunlight. In places with cold winters (including parts of their natural range) they can go into a semi-dormant state called brumation to survive the lower temperatures.
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As for how these seemingly harmless turtles became worldwide pests, the problem isn’t them—it’s us. Red-eared sliders are named for the bright red stripes on their heads, and they also have bright yellow stripes on the rest of their green bodies, making them attractive pets. In the 1950s and 60s, baby red-eared sliders were sold at many American dime stores en masse as a novelty, and were even shipped through the mail in some places to be cheap pets. While hatchlings are just a few inches long, they quickly grow into adult turtles who need plenty of space and a specialized diet. Rather than adapt to their pet’s needs, some owners instead released them into the wild, even in areas far removed from red-eared sliders’ natural habitats. Today, invasive red-eared sliders can be found on every continent except Antarctica. In places like Japan and Australia, red-eared sliders’ adaptability makes them extremely dangerous, as they upend fragile ecosystems by gobbling up the plants, fish, and insects that native species need to survive. Although conservationists the world over are working to remove the invasive turtles from places they don’t belong, they’ve got a long road ahead of them…and turtles aren’t exactly known for their speed.Â
[Image description: A red-eared slider swimming with its head out of water, surrounded by duckweed.] Credit & copyright: Vassil, Wikimedia Commons.Stroll by a stream this summer, and you’ll almost certainly see these colorful sunbathers…even in places they’re not supposed to be. Red-eared sliders are some of the most common freshwater turtles on the planet, both in the wild and in pet stores, but they’re native only to the southeastern U.S. and northern Mexico. Beloved as they are in many places as a sign of sunny weather, these beautiful turtles wreak havoc as an invasive species in places as far away as Australia.
Â
Red-eared sliders are medium-sized, freshwater aquatic turtles. Females are slightly bigger than males, growing to around 12 inches long while males reach average lengths of just nine inches. Like many turtle species, they’re fairly long-lived, with a lifespan of around 30 years in the wild and up to 40 years in captivity. While baby red-eared sliders eat mostly insects, adults eat mostly aquatic plants, but they won’t pass up a chance to eat small fish or scavenge meat if the opportunity arises. Their varied diets make them adaptable to any environment with plentiful water and sunlight. In places with cold winters (including parts of their natural range) they can go into a semi-dormant state called brumation to survive the lower temperatures.
Â
As for how these seemingly harmless turtles became worldwide pests, the problem isn’t them—it’s us. Red-eared sliders are named for the bright red stripes on their heads, and they also have bright yellow stripes on the rest of their green bodies, making them attractive pets. In the 1950s and 60s, baby red-eared sliders were sold at many American dime stores en masse as a novelty, and were even shipped through the mail in some places to be cheap pets. While hatchlings are just a few inches long, they quickly grow into adult turtles who need plenty of space and a specialized diet. Rather than adapt to their pet’s needs, some owners instead released them into the wild, even in areas far removed from red-eared sliders’ natural habitats. Today, invasive red-eared sliders can be found on every continent except Antarctica. In places like Japan and Australia, red-eared sliders’ adaptability makes them extremely dangerous, as they upend fragile ecosystems by gobbling up the plants, fish, and insects that native species need to survive. Although conservationists the world over are working to remove the invasive turtles from places they don’t belong, they’ve got a long road ahead of them…and turtles aren’t exactly known for their speed.Â
[Image description: A red-eared slider swimming with its head out of water, surrounded by duckweed.] Credit & copyright: Vassil, Wikimedia Commons. -
FREEWorld History Daily Curio #3117Free1 CQ
Whether you win or lose this race, you’ll feel the pain in your feet. As part of Pride Week in Madrid, revelers have, for decades, been participating in the “Carrera de Tacones,” or the race of heels. Racers, most of them men, don high-heeled shoes and run through the city’s streets. The premise of the race is predicated on the footwear’s notoriously impractical and uncomfortable nature, but high heels were once considered much more than fashion accessories. In fact, they were worn by soldiers.
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High heels were originally developed for horseback riding in Persia, which owed much of its military success to its mounted soldiers. The pronounced heels helped riders stabilize themselves on stirrups, allowing for greater control over their steeds. Although the earliest depiction of high heels dates back to the 10th century, it’s possible that they were used before then. Regardless, high heels were largely seen as military gear, and for centuries, they were associated with masculinity. Since horseback riding was usually an activity only available to those wealthy enough to own horses, high heels were also a status symbol, and they remained that way until around the first half of the 17th century. As horseback riding became more accessible to commoners, high heels lost their distinguishing appeal, at least for a while. Then, aristocrats in Europe began wearing shoes with increasingly higher heels as a display of wealth, since such footwear would be impractical for manual labor.
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Around the same time, red dye was gaining popularity as a sign of conspicuous consumption, and so red heels became popular. In the 18th century, King Louis XIV of France was so enamored and protective of the shoes as a status symbol that he only allowed members of his court to wear them. While high heels gradually fell out of favor with men, they became more and more popular with women in the 19th century as they, too, sought to wear impractical shoes that denoted their high status, distancing themselves from laborers. Today, some riding shoes still have more pronounced heels than most shoes, though not nearly to the degree they did in the past. Mainly, though, high heels are a fashion item regardless of social status, and they’ve earned such a reputation for being impractical that it’s considered novel to race in them. By the way, the race of heels takes place on cobblestone. Oh, those poor ankles!Â
[Image description: A pair of white, historical high-heeled shoes with pointy toes and yellow-and-green floral embroidery.] Credit & copyright: The Metropolitan Museum of Art, 1690-1700. Rogers Fund, 1906. Public Domain.Whether you win or lose this race, you’ll feel the pain in your feet. As part of Pride Week in Madrid, revelers have, for decades, been participating in the “Carrera de Tacones,” or the race of heels. Racers, most of them men, don high-heeled shoes and run through the city’s streets. The premise of the race is predicated on the footwear’s notoriously impractical and uncomfortable nature, but high heels were once considered much more than fashion accessories. In fact, they were worn by soldiers.
Â
High heels were originally developed for horseback riding in Persia, which owed much of its military success to its mounted soldiers. The pronounced heels helped riders stabilize themselves on stirrups, allowing for greater control over their steeds. Although the earliest depiction of high heels dates back to the 10th century, it’s possible that they were used before then. Regardless, high heels were largely seen as military gear, and for centuries, they were associated with masculinity. Since horseback riding was usually an activity only available to those wealthy enough to own horses, high heels were also a status symbol, and they remained that way until around the first half of the 17th century. As horseback riding became more accessible to commoners, high heels lost their distinguishing appeal, at least for a while. Then, aristocrats in Europe began wearing shoes with increasingly higher heels as a display of wealth, since such footwear would be impractical for manual labor.
Â
Around the same time, red dye was gaining popularity as a sign of conspicuous consumption, and so red heels became popular. In the 18th century, King Louis XIV of France was so enamored and protective of the shoes as a status symbol that he only allowed members of his court to wear them. While high heels gradually fell out of favor with men, they became more and more popular with women in the 19th century as they, too, sought to wear impractical shoes that denoted their high status, distancing themselves from laborers. Today, some riding shoes still have more pronounced heels than most shoes, though not nearly to the degree they did in the past. Mainly, though, high heels are a fashion item regardless of social status, and they’ve earned such a reputation for being impractical that it’s considered novel to race in them. By the way, the race of heels takes place on cobblestone. Oh, those poor ankles!Â
[Image description: A pair of white, historical high-heeled shoes with pointy toes and yellow-and-green floral embroidery.] Credit & copyright: The Metropolitan Museum of Art, 1690-1700. Rogers Fund, 1906. Public Domain.
July 15, 2025
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8 minFREEWork Business CurioFree5 CQ
The Texas economy is among the most vulnerable in the country when it comes to the threat of escalating tariffs. While much of the focus has been on trade wi...
The Texas economy is among the most vulnerable in the country when it comes to the threat of escalating tariffs. While much of the focus has been on trade wi...
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1 minFREEHumanities Word CurioFree1 CQ
Word of the Day
: July 15, 2025\TAN-tuh-lyze\ verb
What It Means
To tantalize someone is to cause them to feel interest or excitement about s...
with Merriam-WebsterWord of the Day
: July 15, 2025\TAN-tuh-lyze\ verb
What It Means
To tantalize someone is to cause them to feel interest or excitement about s...
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FREEMusic Song CurioFree2 CQ
Move over Orbison, there’s a new bayou in town! 1963’s Blue Bayou was originally written and recorded by American rock-and-roll crooner Roy Orbison, best remembered for his playful hit Pretty Woman. Orbison sang Blue Bayou with his signature powerhouse belting and dramatic gravitas, and it was a hit for him. Yet, it’s best remembered as the signature song of a very different artist: American singer Linda Ronstadt. Like Orbison, she defied genre, dabbling in pop, rock, and country. She was able to bring something new to her version of Blue Bayou in 1977 that changed the song forever: nostalgia. Ronstadt’s soft, almost spoken-word first verse stirs up feelings of deep remembrance before giving way to sharp longing in the chorus, communicated by her powerful, belted vocals and a soft harmony that comes across like an echo of the people that the song’s narrator misses. It all leads up to one of the most impressive high notes in pop/rock history. The song became a gold-selling single for Ronstadt, and while she had plenty of happier hits, the loneliness conveyed in Blue Bayou struck a chord, becoming her signature song. Things can’t be sunshine and rainbows all the time.
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Move over Orbison, there’s a new bayou in town! 1963’s Blue Bayou was originally written and recorded by American rock-and-roll crooner Roy Orbison, best remembered for his playful hit Pretty Woman. Orbison sang Blue Bayou with his signature powerhouse belting and dramatic gravitas, and it was a hit for him. Yet, it’s best remembered as the signature song of a very different artist: American singer Linda Ronstadt. Like Orbison, she defied genre, dabbling in pop, rock, and country. She was able to bring something new to her version of Blue Bayou in 1977 that changed the song forever: nostalgia. Ronstadt’s soft, almost spoken-word first verse stirs up feelings of deep remembrance before giving way to sharp longing in the chorus, communicated by her powerful, belted vocals and a soft harmony that comes across like an echo of the people that the song’s narrator misses. It all leads up to one of the most impressive high notes in pop/rock history. The song became a gold-selling single for Ronstadt, and while she had plenty of happier hits, the loneliness conveyed in Blue Bayou struck a chord, becoming her signature song. Things can’t be sunshine and rainbows all the time.
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FREEScience Daily Curio #3116Free1 CQ
We might need to redefine what qualifies as hardwood! Fig trees are known for their delicious fruit, but they may soon be useful as a means of carbon sequestration after scientists discovered that they can turn themselves into stone. It’s not exactly news that trees, like all living things, are made out of carbon. Compared to most organisms, though, trees are great at sequestering carbon. They turn carbon dioxide into organic carbon, which they then use to form everything from roots to leaves. Since trees live so long, they can store that carbon for a long time. That’s why, to combat climate change, it’s a good idea to plant as many trees as possible. It’s a win-win, since trees can also provide food and lumber to people and form habitats for other organisms. One tree, however, seems to be a little ahead of the curve. The Ficus wakefieldii is a species of fig tree native to Kenya, and scientists have found that it can turn carbon dioxide into calcium carbonate, which happens to be what makes up much of limestone. Apparently, other fig trees can do this to some extent, but F. wakefieldii was the best at it out of the three species studied.
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The process is fairly simple. First, the trees convert carbon dioxide into carbon oxalate crystals, and when parts of the tree begin to naturally decay from age, bacteria and fungi convert the crystals into calcium carbonate. Much of the calcium carbonate is released into the surrounding soil, making it less acidic for the tree, but much of it is also stored in the tissue of the tree itself. In fact, scientists found that in some specimens, their roots were completely converted to calcium carbonate. Surprisingly, F. wakefieldii isn’t the only tree capable of doing this. The iroko tree (Milicia excelsa), also native to Africa, can do the same thing, though it’s only used for lumber. Fig trees,on the other hand, can produce food. Either way, carbon minerals can stay sequestered for much longer than organic carbon, so both species could one day be cultivated for that purpose. The real question is, if you wanted to make something from these trees’ wood, would you call a carpenter or a mason?Â
[Image description: A brown, slightly-split fig on a bonsai fig tree.] Credit & copyright: Tangopaso, Wikimedia Commons.We might need to redefine what qualifies as hardwood! Fig trees are known for their delicious fruit, but they may soon be useful as a means of carbon sequestration after scientists discovered that they can turn themselves into stone. It’s not exactly news that trees, like all living things, are made out of carbon. Compared to most organisms, though, trees are great at sequestering carbon. They turn carbon dioxide into organic carbon, which they then use to form everything from roots to leaves. Since trees live so long, they can store that carbon for a long time. That’s why, to combat climate change, it’s a good idea to plant as many trees as possible. It’s a win-win, since trees can also provide food and lumber to people and form habitats for other organisms. One tree, however, seems to be a little ahead of the curve. The Ficus wakefieldii is a species of fig tree native to Kenya, and scientists have found that it can turn carbon dioxide into calcium carbonate, which happens to be what makes up much of limestone. Apparently, other fig trees can do this to some extent, but F. wakefieldii was the best at it out of the three species studied.
Â
The process is fairly simple. First, the trees convert carbon dioxide into carbon oxalate crystals, and when parts of the tree begin to naturally decay from age, bacteria and fungi convert the crystals into calcium carbonate. Much of the calcium carbonate is released into the surrounding soil, making it less acidic for the tree, but much of it is also stored in the tissue of the tree itself. In fact, scientists found that in some specimens, their roots were completely converted to calcium carbonate. Surprisingly, F. wakefieldii isn’t the only tree capable of doing this. The iroko tree (Milicia excelsa), also native to Africa, can do the same thing, though it’s only used for lumber. Fig trees,on the other hand, can produce food. Either way, carbon minerals can stay sequestered for much longer than organic carbon, so both species could one day be cultivated for that purpose. The real question is, if you wanted to make something from these trees’ wood, would you call a carpenter or a mason?Â
[Image description: A brown, slightly-split fig on a bonsai fig tree.] Credit & copyright: Tangopaso, Wikimedia Commons.
July 14, 2025
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2 minFREEHumanities Word CurioFree2 CQ
Word of the Day
: July 14, 2025\NOO-ahnss\ noun
What It Means
A nuance is a very small difference in something, such as color, tone, meaning,...
with Merriam-WebsterWord of the Day
: July 14, 2025\NOO-ahnss\ noun
What It Means
A nuance is a very small difference in something, such as color, tone, meaning,...
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FREEMind + Body Daily Curio #3115Free1 CQ
It was a lot of work, but it had to get done. Once devastated by a water crisis, the city of Flint, Michigan, has now completely replaced all of its lead pipes. In 2014, the city switched its municipal water source to the Flint River, which was cheaper than piping in water from Lake Huron and should have been easy enough to do. The change was part of an ongoing effort to lower the city’s spending after it was placed under state control due to a $25 million deficit. An emergency manager had been assigned by the governor to cut costs wherever possible, and so city officials and residents had no say in the change. Problems quickly arose when those overseeing Flint failed to treat the river water, which was more acidic than the lake water. The water gradually corroded the protective coating that had formed inside the lead pipes during years of hard water use. Eventually, the coating disappeared completely and the acidic water began leeching lead from the pipes. The water was tested periodically by city officials…but not adequately. Water samples were taken after letting the tap run for a little while, allowing any built up lead in the pipes to be washed out. By 2016, however, the effects of lead contamination were obvious. Residents were showing symptoms of lead poisoning, including behavioral changes, increased anxiety and depression, and cognitive decline. Overall, some 100,000 residents and 28,000 homes in and around the city were affected. Following a court decision later that year, residents were provided with faucet filters or water delivery services for drinking water, though these were only temporary solutions. The next year, a court decision forced the city to replace its 11,000 lead pipes. Now, almost 10 years later, the project is finally complete. Time to make a toast with tap water.
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[Image description: The surface of water with slight ripples.] Credit & copyright: MartinThoma, Wikimedia Commons. This file is made available under the Creative Commons CC0 1.0 Universal Public Domain Dedication.It was a lot of work, but it had to get done. Once devastated by a water crisis, the city of Flint, Michigan, has now completely replaced all of its lead pipes. In 2014, the city switched its municipal water source to the Flint River, which was cheaper than piping in water from Lake Huron and should have been easy enough to do. The change was part of an ongoing effort to lower the city’s spending after it was placed under state control due to a $25 million deficit. An emergency manager had been assigned by the governor to cut costs wherever possible, and so city officials and residents had no say in the change. Problems quickly arose when those overseeing Flint failed to treat the river water, which was more acidic than the lake water. The water gradually corroded the protective coating that had formed inside the lead pipes during years of hard water use. Eventually, the coating disappeared completely and the acidic water began leeching lead from the pipes. The water was tested periodically by city officials…but not adequately. Water samples were taken after letting the tap run for a little while, allowing any built up lead in the pipes to be washed out. By 2016, however, the effects of lead contamination were obvious. Residents were showing symptoms of lead poisoning, including behavioral changes, increased anxiety and depression, and cognitive decline. Overall, some 100,000 residents and 28,000 homes in and around the city were affected. Following a court decision later that year, residents were provided with faucet filters or water delivery services for drinking water, though these were only temporary solutions. The next year, a court decision forced the city to replace its 11,000 lead pipes. Now, almost 10 years later, the project is finally complete. Time to make a toast with tap water.
Â
[Image description: The surface of water with slight ripples.] Credit & copyright: MartinThoma, Wikimedia Commons. This file is made available under the Creative Commons CC0 1.0 Universal Public Domain Dedication. -
9 minFREEWork Business CurioFree5 CQ
Among the spending cuts in the big tax bill signed into law by President Donald Trump last week: $186 billion over the next decade to the Supplemental Nutrit...
Among the spending cuts in the big tax bill signed into law by President Donald Trump last week: $186 billion over the next decade to the Supplemental Nutrit...
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FREEAesthetic Art CurioFree1 CQ
Is it a unicorn or a dragon? A little of both, really. The kirin, also known as qilin in Chinese and girin in Korean, is a mythical beast that’s closer to reality than one would think. The piece above is an ivory figurine depicting a horse-like creature with a horn and scales, looking upward with its mouth open. While this particular piece is Japanese, the same beast is found in several cultures. In Japan, the kirin is often depicted as having one horn, like the European unicorn. In Chinese and Korean depictions, the qilin or girin is depicted with two horns or antlers. Most versions have the body of a deer, the tail of an ox, and the head and scales of a dragon. Some say that kirins only appear during times of peace, and that they’re so careful not to harm other creatures that they walk without even stepping on insects or blades of grass. Although the creature is entirely mythical, it has a namesake in the real world. In Japan and Korea, kirin and girin are the words used for “giraffe.” If any animal looks otherworldly enough to be named after a fantastical beast, giraffes would be it!
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Kirin (Mythical Chimera), Edo period (1615–1868), Ivory, 2.87 in. (7.3 cm.), The Metropolitan Museum of ArtÂ
[Image credit & copyright: The Metropolitan Museum of Art, Gift of Mrs. Russell Sage, 1910. Public Domain.]Is it a unicorn or a dragon? A little of both, really. The kirin, also known as qilin in Chinese and girin in Korean, is a mythical beast that’s closer to reality than one would think. The piece above is an ivory figurine depicting a horse-like creature with a horn and scales, looking upward with its mouth open. While this particular piece is Japanese, the same beast is found in several cultures. In Japan, the kirin is often depicted as having one horn, like the European unicorn. In Chinese and Korean depictions, the qilin or girin is depicted with two horns or antlers. Most versions have the body of a deer, the tail of an ox, and the head and scales of a dragon. Some say that kirins only appear during times of peace, and that they’re so careful not to harm other creatures that they walk without even stepping on insects or blades of grass. Although the creature is entirely mythical, it has a namesake in the real world. In Japan and Korea, kirin and girin are the words used for “giraffe.” If any animal looks otherworldly enough to be named after a fantastical beast, giraffes would be it!
Â
Kirin (Mythical Chimera), Edo period (1615–1868), Ivory, 2.87 in. (7.3 cm.), The Metropolitan Museum of ArtÂ
[Image credit & copyright: The Metropolitan Museum of Art, Gift of Mrs. Russell Sage, 1910. Public Domain.]
July 13, 2025
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2 minFREEHumanities Word CurioFree2 CQ
Word of the Day
: July 13, 2025\kun-TRYTE\ adjective
What It Means
Contrite is a formal adjective used to describe someone who feels regret f...
with Merriam-WebsterWord of the Day
: July 13, 2025\kun-TRYTE\ adjective
What It Means
Contrite is a formal adjective used to describe someone who feels regret f...
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9 minFREEWork Business CurioFree5 CQ
President Donald Trump says he wants 50% import taxes on goods from Brazil, even though Brazil buys more from the U.S. than it sells here. Trump has criticiz...
President Donald Trump says he wants 50% import taxes on goods from Brazil, even though Brazil buys more from the U.S. than it sells here. Trump has criticiz...
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FREEUS History PP&T CurioFree1 CQ
Going to the airport just got a lot less annoying. For decades, travelers have had to endure the inconvenience of taking their shoes on and off at security checkpoints at U.S. airports. To the relief of many, the Transportation Safety Administration (TSA) has now announced that they will be scrapping their much-criticized policy, and will allow travelers to keep their shoes on through security. Still, it might behoove us not to forget the criminal plot that triggered the shoes-off rule in the first place.
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While many equate the TSA’s shoes-off rule with the September 11th terrorist attacks, it's more closely related to a completely different crime. The man responsible was Richard Reid, a British national who became radicalized and left the U.K. in 1998 to receive training from al-Qaeda in Afghanistan. In December of 2001, he arrived in Brussels, Belgium, then traveled to Paris. While in Brussels, Reid purchased a pair of black sneakers, which he plotted to use in an attempted bombing. In Paris, he purchased round-trip tickets to Antigua and Barbuda which included a stop in Miami. By then, he had already rigged his sneakers with homemade explosives by cutting a space for them in the soles. Reid even hid fuses in the shoes’ tongues. Despite his efforts to disguise the device, airport security in Paris grew suspicious of Reid for several reasons. First, he used cash to purchase his tickets, which was unusual given their high price. Secondly, he carried no luggage with him despite his supposed intention to travel overseas. Delayed by airport security, Reid missed his flight and booked another for Miami, which he did manage to board successfully on December 22. During the flight, Reid made several attempts to light the fuse of his homemade “shoe bomb”, but was caught by a passenger who complained about the smell of sulfur emanating from his seat. On the second attempt, he got into an altercation with the same passenger, after which other passengers and flight attendants jumped in to subdue him. Unable to carry out his plan, Reid was tied down and injected with sedatives until authorities could detain him.
Â
Although the attempted plot by the so-called “Shoe Bomber” took place in 2001, it wasn’t until 2006 that TSA instated the shoes-off policy. The rule required travelers to take off their shoes, place them in a bin, and pass them through an x-ray machine for screening before they were allowed to put them back on. It was a hassle at the best of times, and could lead to slow lines and delays at the worst of times. Now, the Department of Homeland Security (DHS), which oversees the TSA, claims that such screenings are no longer necessary due to more advanced scanners and an increase in the number of officers at security checkpoints.
Â
As annoying as the policy may have been, it still had its supporters. After all, Reid’s homemade explosive contained just ten ounces of explosive material, yet according to the FBI, the explosion would have torn a hole in the fuselage and caused the plane to crash had it been successfully detonated. For most of the world, the consequences of Reid’s actions will be largely forgotten with the repeal of the shoes-off policy. The perpetrator himself, on the other hand, is still serving a life sentence at a maximum-security prison after pleading guilty to eight terrorism-related charges in 2002. Reid also wasn’t the last person to attempt an airline bombing. In 2009, another would-be terrorist failed to detonate an explosive hidden in his underwear, prompting the use of full-body scanners by the TSA shortly thereafter. At least they didn’t make everyone take off their underwear while in line.Â
[Image description: A pair of men’s vintage black dress shoes.] Credit & copyright: The Metropolitan Museum of Art. Public Domain.Going to the airport just got a lot less annoying. For decades, travelers have had to endure the inconvenience of taking their shoes on and off at security checkpoints at U.S. airports. To the relief of many, the Transportation Safety Administration (TSA) has now announced that they will be scrapping their much-criticized policy, and will allow travelers to keep their shoes on through security. Still, it might behoove us not to forget the criminal plot that triggered the shoes-off rule in the first place.
Â
While many equate the TSA’s shoes-off rule with the September 11th terrorist attacks, it's more closely related to a completely different crime. The man responsible was Richard Reid, a British national who became radicalized and left the U.K. in 1998 to receive training from al-Qaeda in Afghanistan. In December of 2001, he arrived in Brussels, Belgium, then traveled to Paris. While in Brussels, Reid purchased a pair of black sneakers, which he plotted to use in an attempted bombing. In Paris, he purchased round-trip tickets to Antigua and Barbuda which included a stop in Miami. By then, he had already rigged his sneakers with homemade explosives by cutting a space for them in the soles. Reid even hid fuses in the shoes’ tongues. Despite his efforts to disguise the device, airport security in Paris grew suspicious of Reid for several reasons. First, he used cash to purchase his tickets, which was unusual given their high price. Secondly, he carried no luggage with him despite his supposed intention to travel overseas. Delayed by airport security, Reid missed his flight and booked another for Miami, which he did manage to board successfully on December 22. During the flight, Reid made several attempts to light the fuse of his homemade “shoe bomb”, but was caught by a passenger who complained about the smell of sulfur emanating from his seat. On the second attempt, he got into an altercation with the same passenger, after which other passengers and flight attendants jumped in to subdue him. Unable to carry out his plan, Reid was tied down and injected with sedatives until authorities could detain him.
Â
Although the attempted plot by the so-called “Shoe Bomber” took place in 2001, it wasn’t until 2006 that TSA instated the shoes-off policy. The rule required travelers to take off their shoes, place them in a bin, and pass them through an x-ray machine for screening before they were allowed to put them back on. It was a hassle at the best of times, and could lead to slow lines and delays at the worst of times. Now, the Department of Homeland Security (DHS), which oversees the TSA, claims that such screenings are no longer necessary due to more advanced scanners and an increase in the number of officers at security checkpoints.
Â
As annoying as the policy may have been, it still had its supporters. After all, Reid’s homemade explosive contained just ten ounces of explosive material, yet according to the FBI, the explosion would have torn a hole in the fuselage and caused the plane to crash had it been successfully detonated. For most of the world, the consequences of Reid’s actions will be largely forgotten with the repeal of the shoes-off policy. The perpetrator himself, on the other hand, is still serving a life sentence at a maximum-security prison after pleading guilty to eight terrorism-related charges in 2002. Reid also wasn’t the last person to attempt an airline bombing. In 2009, another would-be terrorist failed to detonate an explosive hidden in his underwear, prompting the use of full-body scanners by the TSA shortly thereafter. At least they didn’t make everyone take off their underwear while in line.Â
[Image description: A pair of men’s vintage black dress shoes.] Credit & copyright: The Metropolitan Museum of Art. Public Domain.
July 12, 2025
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2 minFREEHumanities Word CurioFree2 CQ
Word of the Day
: July 12, 2025\im-PYOO-nuh-tee\ noun
What It Means
Impunity, usually used in the phrase "with impunity," refers to exemption...
with Merriam-WebsterWord of the Day
: July 12, 2025\im-PYOO-nuh-tee\ noun
What It Means
Impunity, usually used in the phrase "with impunity," refers to exemption...
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10 minFREEWork Business CurioFree6 CQ
Medicaid is run by the states, but about 70% of its funding comes from the federal government. Now, given $1 trillion in cuts from President Donald Trump's t...
Medicaid is run by the states, but about 70% of its funding comes from the federal government. Now, given $1 trillion in cuts from President Donald Trump's t...
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FREERunning Sporty CurioFree1 CQ
In competitive racing, a few seconds can make all the difference in the world. Many female runners have been trying to break through the 14 -minute barrier in the 5,000 meter event, and Beatrice Chebet has finally managed it with just under two seconds to spare. During the Prefontaine Classic, held at Hayward Field in Eugene, Oregon, Kenyan runner Beatrice Chebet made history by coming in first in the 5,000 meter with a time of 13 minutes and 58.06 seconds. Her compatriot, Agnes Jebet Ngetich, finished close behind her in second place with a time of 14:01.29, followed by Ethiopian Gudaf Tsegay with 14:04.41. Tsegay was the previous record holder in the 5,000 meter with a time of 14:00.21, also set at Hayward Field in 2023, and while Ngetich didn’t win the race, her time is now the third-fastest for the event. This race also isn’t the first time Chebet has made history. Last year, she broke the 29-minute barrier for the 10,000 meter by coming in first with a time of 28:54.14. With other runners coming in tantalizingly close to the 14-minute and 29-minute barriers, it may be only a matter of time until Chebet’s records are broken too. But how many people can say that they did it first twice?
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In competitive racing, a few seconds can make all the difference in the world. Many female runners have been trying to break through the 14 -minute barrier in the 5,000 meter event, and Beatrice Chebet has finally managed it with just under two seconds to spare. During the Prefontaine Classic, held at Hayward Field in Eugene, Oregon, Kenyan runner Beatrice Chebet made history by coming in first in the 5,000 meter with a time of 13 minutes and 58.06 seconds. Her compatriot, Agnes Jebet Ngetich, finished close behind her in second place with a time of 14:01.29, followed by Ethiopian Gudaf Tsegay with 14:04.41. Tsegay was the previous record holder in the 5,000 meter with a time of 14:00.21, also set at Hayward Field in 2023, and while Ngetich didn’t win the race, her time is now the third-fastest for the event. This race also isn’t the first time Chebet has made history. Last year, she broke the 29-minute barrier for the 10,000 meter by coming in first with a time of 28:54.14. With other runners coming in tantalizingly close to the 14-minute and 29-minute barriers, it may be only a matter of time until Chebet’s records are broken too. But how many people can say that they did it first twice?
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July 11, 2025
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9 minFREEWork Business CurioFree5 CQ
Back-to-school shopping already? We’re only about halfway through July, but for retailers — and some very organized parents — the back-to-school shopping sea...
Back-to-school shopping already? We’re only about halfway through July, but for retailers — and some very organized parents — the back-to-school shopping sea...
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FREEMind + Body Daily CurioFree1 CQ
What does a fruit salad have to do with one of the world’s most famous hotels? More than you’d think! Waldorf salad is more than just a great choice for cooling down during summer, it’s an integral part of American culinary history. Developed at New York City’s famous Waldorf-Astoria hotel during the establishment’s golden age, this humble salad is a superstar…albiet a misunderstood one.
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Modern Waldorf salad is usually made with chopped apples, mayonnaise, sliced grapes, chopped celery, and walnuts. Raisins are also sometimes added. Juice from the chopped apples melds with the mayonnaise during mixing, giving the salad a tangy, sweet flavor. Often, green apples and grapes are used, though some suggest using pink lady apples for a less pucker-inducing dish. Though Waldorf salad is fairly simple to make, it used to be even more so. The original recipe called for just three ingredients: apples, celery, and mayonnaise.
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Unlike many other iconic foods, Waldorf salad’s history is well-documented. It was first served on March 13, 1896, at New York City’s Waldorf-Astoria by famed maĂ®tre d'hĂ´tel Oscar Tschirky. At the time, the Waldorf-Astoria was known as a hotel of the elite. Diplomats, movie stars, and other international celebrities frequently stayed there, and as such the hotel’s menus had to meet high standards and change frequently enough to keep guests interested. Tschirky was a master at coming up with simple yet creative dishes. He first served his three-ingredient Waldorf salad at a charity ball for St. Mary's Hospital, where it was an instant hit. It soon gained a permanent place on the hotel’s menu, and spread beyond its walls when Tschirky published The Cook Book, by "Oscar" of the Waldorf later that same year. Soon, Waldorf salad made its way onto other restaurant menus in New York City, and remained a regional dish for a time before spreading to the rest of the country. Naturally, the further from its birthplace the salad traveled, the more it changed. Regional variations that included grapes and walnuts eventually became the standard, though no one is quite sure how. What’s wrong with teaching an old salad new tricks?Â
[Image description: A pile of green apples with some red coloring in a cardboard box.] Credit & copyright: Daderot, Wikimedia Commons. This file is made available under the Creative Commons CC0 1.0 Universal Public Domain Dedication.What does a fruit salad have to do with one of the world’s most famous hotels? More than you’d think! Waldorf salad is more than just a great choice for cooling down during summer, it’s an integral part of American culinary history. Developed at New York City’s famous Waldorf-Astoria hotel during the establishment’s golden age, this humble salad is a superstar…albiet a misunderstood one.
Â
Modern Waldorf salad is usually made with chopped apples, mayonnaise, sliced grapes, chopped celery, and walnuts. Raisins are also sometimes added. Juice from the chopped apples melds with the mayonnaise during mixing, giving the salad a tangy, sweet flavor. Often, green apples and grapes are used, though some suggest using pink lady apples for a less pucker-inducing dish. Though Waldorf salad is fairly simple to make, it used to be even more so. The original recipe called for just three ingredients: apples, celery, and mayonnaise.
Â
Unlike many other iconic foods, Waldorf salad’s history is well-documented. It was first served on March 13, 1896, at New York City’s Waldorf-Astoria by famed maĂ®tre d'hĂ´tel Oscar Tschirky. At the time, the Waldorf-Astoria was known as a hotel of the elite. Diplomats, movie stars, and other international celebrities frequently stayed there, and as such the hotel’s menus had to meet high standards and change frequently enough to keep guests interested. Tschirky was a master at coming up with simple yet creative dishes. He first served his three-ingredient Waldorf salad at a charity ball for St. Mary's Hospital, where it was an instant hit. It soon gained a permanent place on the hotel’s menu, and spread beyond its walls when Tschirky published The Cook Book, by "Oscar" of the Waldorf later that same year. Soon, Waldorf salad made its way onto other restaurant menus in New York City, and remained a regional dish for a time before spreading to the rest of the country. Naturally, the further from its birthplace the salad traveled, the more it changed. Regional variations that included grapes and walnuts eventually became the standard, though no one is quite sure how. What’s wrong with teaching an old salad new tricks?Â
[Image description: A pile of green apples with some red coloring in a cardboard box.] Credit & copyright: Daderot, Wikimedia Commons. This file is made available under the Creative Commons CC0 1.0 Universal Public Domain Dedication.
July 10, 2025
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8 minFREEWork Business CurioFree5 CQ
From the BBC World Service: Lesotho has declared a national state of disaster that will last for two years. The government says soaring youth unemployment an...
From the BBC World Service: Lesotho has declared a national state of disaster that will last for two years. The government says soaring youth unemployment an...
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FREEScience Nerdy CurioFree1 CQ
These mountains look cool, but they can be real hotheads. Researchers from the University of Wisconsin–Madison have presented a study at the Goldschmidt Conference in Prague suggesting that dormant volcanoes around the world may become more active as a result of melting glaciers. First, some clarification: there are three main volcano classifications depending on their level of activity. “Active” means that the volcano has erupted during the Holocene epoch (the last 11,650 years or so) and has the potential to erupt again in the future. “Extinct” means that, as far as anyone can tell, the volcano is unlikely to ever erupt again (though it happens from time to time). “Dormant”, on the other hand, means “potentially active,” as in, it’s an active volcano (the first classification) that’s just not erupting presently, as opposed to “actively erupting,” which means magma is currently coming out of the ground.
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A lot of factors contribute to a volcano’s dormancy, and scientists have found that glaciers are one of them. Researchers tracked volcanic activity by measuring the radioactive decay of argon in crystals formed in magmatic rock. They then compared that to the level of ice cover during the peak of the last ice age. What the data seems to suggest is that the ice cover acted as a lid, inhibiting eruptions. As the ice melted, volcanoes became more active. Currently, there are an estimated 245 dormant volcanoes buried under three miles of ice, and many of them are in Antarctica. Once these begin to erupt due to the reduction in ice cover, it may create a feedback loop as the eruptions themselves further melt the ice. It seems there will be an icy reception before things really heat up.Â
[Image description: A portion of the Andes mountain range between Chile and Argentina, photographed from far above.] Credit & copyright: Jorge Morales Piderit, Wikimedia Commons. The copyright holder of this work has released it into the public domain. This applies worldwide.
ÂThese mountains look cool, but they can be real hotheads. Researchers from the University of Wisconsin–Madison have presented a study at the Goldschmidt Conference in Prague suggesting that dormant volcanoes around the world may become more active as a result of melting glaciers. First, some clarification: there are three main volcano classifications depending on their level of activity. “Active” means that the volcano has erupted during the Holocene epoch (the last 11,650 years or so) and has the potential to erupt again in the future. “Extinct” means that, as far as anyone can tell, the volcano is unlikely to ever erupt again (though it happens from time to time). “Dormant”, on the other hand, means “potentially active,” as in, it’s an active volcano (the first classification) that’s just not erupting presently, as opposed to “actively erupting,” which means magma is currently coming out of the ground.
Â
A lot of factors contribute to a volcano’s dormancy, and scientists have found that glaciers are one of them. Researchers tracked volcanic activity by measuring the radioactive decay of argon in crystals formed in magmatic rock. They then compared that to the level of ice cover during the peak of the last ice age. What the data seems to suggest is that the ice cover acted as a lid, inhibiting eruptions. As the ice melted, volcanoes became more active. Currently, there are an estimated 245 dormant volcanoes buried under three miles of ice, and many of them are in Antarctica. Once these begin to erupt due to the reduction in ice cover, it may create a feedback loop as the eruptions themselves further melt the ice. It seems there will be an icy reception before things really heat up.Â
[Image description: A portion of the Andes mountain range between Chile and Argentina, photographed from far above.] Credit & copyright: Jorge Morales Piderit, Wikimedia Commons. The copyright holder of this work has released it into the public domain. This applies worldwide.
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FREEWorld History Daily Curio #3114Free1 CQ
These are some not-so-fresh kicks. Archaeologists in England have unearthed 2,000-year-old pairs of Roman shoes, and they’re some of the best preserved footwear from the era. The researchers were working at the Magna Roman Fort in Northumberland, located near another ancient Roman fort called Vindolanda, when they made the discovery. Many famous artifacts have been unearthed at Vindolanda, including wooden writing tablets and around 5,000 pairs of ancient Roman shoes. The Magna site, it seems, is literally following in those footsteps, with 32 shoes found so far preserved in the fort’s “ankle-breaker” trenches. Originally designed to trip and injure attackers, the trenches ended up being a perfect, anaerobic environment to preserve the shoes.
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Roman shoes were made with hand-stitched leather, and many were closed-toed as opposed to the sandals often portrayed in popular media (in fact, sandals were only worn indoors). The ancient Romans were actually expert shoemakers, and their footwear contributed greatly to their military success. Most Roman soldiers wore caligae, leather boots consisting of an outer shell cut into many strips that allowed them to be laced up tightly. Replaceable iron hobnails on the soles helped the boots last longer and provided traction on soft surfaces. These boots were eventually replaced with completely enclosed ones called calcei, but the caligae have left a greater impression on the perception of Roman culture. That’s probably thanks to Caligula, the infamous Roman emperor whose real name was Gaius. When Gaius was a child, he accompanied his father on campaign in a set of kid-sized legionary gear, including the caligae. The soldiers then started calling him “Caligula,” which means “little boots.” Unfortunate, since he had some big shoes to fill as the third emperor of Rome.Â
[Image description: A detailed, black-and-white illustration of two elaborately-dressed ancient Roman soldiers looking at one another.] Credit & copyright: The Metropolitan Museum of Art, Two Roman Soldiers, Giovanni Francesco Venturini, 17th century. Bequest of Phyllis Massar, 2011. Public Domain.These are some not-so-fresh kicks. Archaeologists in England have unearthed 2,000-year-old pairs of Roman shoes, and they’re some of the best preserved footwear from the era. The researchers were working at the Magna Roman Fort in Northumberland, located near another ancient Roman fort called Vindolanda, when they made the discovery. Many famous artifacts have been unearthed at Vindolanda, including wooden writing tablets and around 5,000 pairs of ancient Roman shoes. The Magna site, it seems, is literally following in those footsteps, with 32 shoes found so far preserved in the fort’s “ankle-breaker” trenches. Originally designed to trip and injure attackers, the trenches ended up being a perfect, anaerobic environment to preserve the shoes.
Â
Roman shoes were made with hand-stitched leather, and many were closed-toed as opposed to the sandals often portrayed in popular media (in fact, sandals were only worn indoors). The ancient Romans were actually expert shoemakers, and their footwear contributed greatly to their military success. Most Roman soldiers wore caligae, leather boots consisting of an outer shell cut into many strips that allowed them to be laced up tightly. Replaceable iron hobnails on the soles helped the boots last longer and provided traction on soft surfaces. These boots were eventually replaced with completely enclosed ones called calcei, but the caligae have left a greater impression on the perception of Roman culture. That’s probably thanks to Caligula, the infamous Roman emperor whose real name was Gaius. When Gaius was a child, he accompanied his father on campaign in a set of kid-sized legionary gear, including the caligae. The soldiers then started calling him “Caligula,” which means “little boots.” Unfortunate, since he had some big shoes to fill as the third emperor of Rome.Â
[Image description: A detailed, black-and-white illustration of two elaborately-dressed ancient Roman soldiers looking at one another.] Credit & copyright: The Metropolitan Museum of Art, Two Roman Soldiers, Giovanni Francesco Venturini, 17th century. Bequest of Phyllis Massar, 2011. Public Domain.