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BIG QUESTIONS

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I could write a book on the strange stuff my cat does, but when I switched her food from dry to wet recently, she started doing something really weird: She’d maneuver her way around her food dish, pawing the ground as she went. Her behavior was odd enough

Erin McCarthy
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Like the Shaun of the Dead slogan says, "aim for the head." But before you start readying your zombie apocalypse weapon of choice, you'd better find out if you're going to get in trouble for taking out the infected. According to San Diego criminal lawyer

Jill Harness
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Every dog seems to have one—that special spot on his belly or flank that, when scratched, sends his back leg kicking like crazy. It’s odd and amusing, especially because some dogs seems to be as confused by it as their owners are. What’s going

Matt Soniak


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It’s a reliable movie trope: Our heroes are lost in the woods, and in their valiant effort to make a beeline out of the forest or back to camp or civilization, they inevitably get turned around and wind up back at the same spot where they began.When a sci

Matt Soniak


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Coat patterns such as a zebra’s stripes afford animals the ability to blend into their environment and among other individuals with the same patterns. Predators can’t see camouflaged animals or target specific individuals in a mass of spots or stripes. A

Monica Granados


Wikimedia Commons"Happy as a clam" is one of those expressions that makes you wonder: Does this phrase come from an actual measurement of the happiness of

Erica Hersh


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Stereoscopy—the illusion of depth created by showing a separate image to each eye—is at least as old as photography itself. In the last few years, however, stereoscopic 3D movies have come back in a big way. Theaters show you 3D movies by projecting two i

Andrew Koltonow
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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

Laura Steadham Smith




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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

Erin McCarthy


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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

Matt Soniak


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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

Matt Soniak
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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?

Matt Soniak
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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

Matt Soniak


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If you’re like most people, you simply can’t pass up the opportunity to partake in a piece of chocolate (or five).

Erin McCarthy


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

Matt Soniak




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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

Matt Soniak
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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

Matt Soniak
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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

Matt Soniak

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

Kara Kovalchik