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Historically, dockworkers covered their hats with tar and let that harden to offer some protection against falling objects. But hard hats as we know them today developed slowly.Wikipedia credits writer Franz Kafka with designing the first industrial hard
My dad always used to preface the dropping of an F-bomb or a tangent of creative profanity with a request that listeners “pardon his French.”
Reader and frequent question-asker Nate J. wrote in wondering why we say things like "10-4" and "Roger" on walkie-talkies and other two-way radios.
The act of scraping nails down a chalkboard creates a sound so awful that most people have an instantaneous reaction: A shiver runs up the spine, and they slap their hands over their ears. Anything to block out that noise! But why do unpleasant sounds af
A mental_floss staffer who shall remain nameless asks, “Why is cranberry juice good for treating UTIs? I will not tell you why this question had been on my mind.”Bacterial infections in the urinary tract and its organs are pretty common, especially in adu
Around this time of year, we’re all loosening our belts and getting ready to gorge ourselves on hot, gravy-laden turkey. So we couldn’t help but wonder about things at the opposite end of the temperature spectrum: the “cold turkey” invoked when people up
Photo Courtesy of the Free Library of PhiladelphiaTechnical drawings of architectural or engineering designs always seem to consist of white images and text on blue paper. Why?
Try and say “she sells sea shells by the sea shore” three times very fast. The first time might go alright, but on the second or third go-round, chances are the words start to degrade as you’re saying them, falling apart in your mouth like a crumbling Jen
I rewatched Jurassic Park a few weeks ago and, from the story to the special effects, it still holds up. But I’ve been nagged by one thing that’s stuck with me from the first time I saw the movie...
If you’re like most people, you simply can’t pass up the opportunity to partake in a piece of chocolate (or five).
Despite their astonishing record of losses when dealing with lumberjacks and beavers, trees are pretty tough customers. Their trunks, branches, roots and twigs are all more than capable of enduring a winter's worth of freezing temperatures, snow, sleet an
Snake oil salesmen all over the web would have you believe that, for a few easy payments, they'll reveal to you a diet focused on “negative calorie” foods.
One of the most persistent myths in American history is that European explorers really got one over on the Native Americans by purchasing the entire island of Manhattan—where property has averaged $1000+ per square foot over the last few years—for a measl
When I was a kid, my parents often tried to sell me on the idea that carrots were good for my eyes—and if I wanted to avoid vision correction in the future, I would eat them now. But after I was fitted for my first pair of glasses in fourth grade, they dr
Though fingerprints are handy for identifying perps, biologically, scientists still aren't quite sure what our fingerprints are for. But as they test different hypotheses, they're getting closer to the answer—and learning some pretty cool stuff in the pro
Image credit: Duke.eduThere was a time when almost every university student was a sophomore. Well, a sophister, to be exact, but that’s where the word “sophomore” originated. A sophist was a wise man (derived from the Greek word sophos), so when Henry VI
Before a ship slides from its berth into the water, it must first get hit on—by a bottle of booze, usually champagne. Here’s the lowdown on the history and physics of smashing some bubbly and launching a ship
In the wild, giant panda mating occurs just as nature specials would have you believe. There’s intense competition for each female, and the dominant male will mate with her several times to ensure success. And that strategy works: Wild female pandas gener
When I was a kid with a Nintendo Entertainment System (NES), sometimes my games wouldn't load. But I, like all kids, knew the secret: take out the game cartridge, blow on the contacts, and put it back in. And it seemed to work. (When it failed, I'd ju
Christopher Stevens, the U.S. Ambassador to Libya, was killed last night along with three other Americans when an Islamist mob stormed the American Consulate in Benghazi. With the tragic story all over the news today, reader Kimberly wrote to ask what, ex
A friend of mine recently got pinkeye. Whenever she put in her eye drops, she noticed a distinct and very unpleasant taste on the back of her tongue.
Who put the bomp in the bomp bah bomp bah bomp? Who put the -stan in Afghanistan? I don’t know about the former, but we can thank the Proto-Indo-Europeans for the latter.
Readers Meg, Wayne, and Rajiv all wrote in to ask about the tune that clock chimes typically play. What’s it called? Where did it come from? How’d it get so popular? Here’s the story.http://youtu.be/2mfBkd7MAdMIn 1793, a new clock was installed at St Mary
Reader Jen wrote in to ask, “Why do old injuries ache during crummy ache during crummy weather?" The idea that certain aches and pains correspond with, and can even predict, the weather is widespread, and has been around since at least the days of ancient