Mental Floss

BIG QUESTIONS

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It's time to pull out those calculators and do the math with the density and volume to determine the total water content of the cloud.

Matt Soniak
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Before it was called PBR or even Pabst, the official beer of hipsters, old blue collar Wisconsinites and Frank Booth was brewed under the name Best Select, starting in 1875.

Matt Soniak
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Close perusal of a Wonder loaf’s list of ingredients reveals some 29 tongue-tying components, while the whole grain loaf has five or six, none over two syllables. So why are more heavily processed foods and those with more ingredients typically less expen

Kevin Kampwirth


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Travelers to Chicago may experience the wind gusts that come off Lake Michigan, get tossed around a bit and think, “So this is why it’s called the Windy City.” The nickname, which dates back to the late 1870s, is deceiving because, literally, Chicago is a

Bryan Dugan


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In truth, not much. The primary ingredient to both, not surprisingly, is sodium chloride. In fact, the U.S. government requires that any food-grade salt be a minimum of 97.5 percent pure, so any type of salt you consume in the U.S. (and most developed cou

Daven Hiskey


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In 1996, the cicadas of Brood II (the “East Coast Brood”) swarmed the northeastern United States and then disappeared almost as quickly as they came, leaving only their eggs and molted exoskeletons behind. Once the eggs hatched, the new generation of cica

Matt Soniak


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Reader Gabrielle wrote in to ask: “Can a pope be ousted? And has it happened before?”

Matt Soniak
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The best early ‘90s children’s bookshelves were full of books about child detectives, including Cam Jansen, the fifth grade super-sleuth with a photographic memory. She was called “Cam,” short for “camera,” because she would close her eyes and say, “cli

Roma Panganiban






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For every world religion, there is a place to worship. For Christianity, there are a confusing variety of names for these places, which are frequently—but incorrectly—used interchangeably. Church, chapel, and cathedral are the trio of terms most commonly

Roma Panganiban


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Despite the notion of horses as pets and companions, horsemeat is widely and willingly consumed in countries ranging from Mexico to China to Italy. So how, exactly, did eating horsemeat become taboo for the rest of us?

Kevin Kampwirth
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There are millions of people, even in the mostly monolingual US, who speak more than one language at home. Competence in three languages is not unusual. But what about 10, 20, 30, 100 languages? What's the upper limit on the number of languages a person c

Arika Okrent
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Despite urban legends claiming that waking a sleepwalker will send them into shock or give them a heart attack, it’s pretty much harmless. While you can wake them up, you probably shouldn’t, and that’s for both your benefit.

Matt Soniak


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Few products in civilized history can match the mythology and ubiquity of Coca-Cola. In the 1930s, Coke’s inscrutability found itself at odds with a niche, but rapidly growing consumer base: Orthodox Jewish immigrants whose dietary restrictions prevented

Kevin Kampwirth


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Happy Washington's Birthday! Oh, did you think we were celebrating Presidents' Day? In fact, the federal holiday on the third Monday in February is officially known as Washington's Day to celebrate the birthday of the first president.

Jason Plautz


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Snails are objects of fascination for kids playing outside. Lucky for the snails, they have their hard shells to protect them from children and predators alike. But are they born with that natural armor, or do they have to find it or grow it for themselve

Kaitlyn Boettcher


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Falling in love is one of the best feelings in the world. The tools available to biologists have advanced immensely in the last few decades, and they're using that technology to decipher the physiology involved in falling in love.

Andrew Koltonow
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fastidious self-care is reflected in human routines—brushing teeth, combing hair, clipping nails—but also in the habits of scuttling, scream-inducing cockroaches. There’s a certain irony in the hygienic customs of insects whose presence often connotes fil

Roma Panganiban