Mick asks: Why do some things have plugs with two prongs and others need three to work? To provide a source of power, electricity must flow in a circuit. (Although, you might be surprised to learn the net velocity of the flow of the electrons is actually quite a bit slower than a turtle.) In a typical American outlet, the […]
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Stephanie I. asks: Why do beets turn some peoples pee red while others it doesn’t? Asparagus may be the most well-known urine changer, and even Ben Franklin acknowledged that just “a few stems of asparagus eaten, shall give our urine a disagreeable odor.” Although the precise mechanism is not definitively understood (despite extensive study), it is generally thought that a […]
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Kalia F. asks: If an astronaut has an itch when in a space suit, like on their face, how do they itch it? Without the use of their hands, astronauts have to rely on other means to scratch various itches. For any itch outside of the face, retired astronaut Clayton Anderson explained, “You shake, rattle and roll, baby! That’s the […]
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James E. asks: Where did the at symbol come from? Ubiquitous today, until its use in email addresses, the @ symbol was never really all that popular, with this very fact being one of the reasons it was chosen to be used in electronic message addresses in the first place. So where did the @ symbol come from? The earliest […]
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Kyle D. asks: Why do oysters make pearls? Oysters make pearls as a defensive response to foreign objects. The process begins when some foreign body, such as sand, a parasite or some other organic material, manages to make its way inside the oyster’s shell and comes in contact with the mantle, a layer that protects the oyster’s internal organs, sometimes even […]
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Jessica asks: Are people who are allergic to house cats allergic to tigers and other large cats? One of its most common behaviors greatly contributes to the domestic cat’s propensity to stimulate an allergic response in some humans – its grooming. When the cat licks itself, it stimulates both its salivary glands as well as sebaceous glands in its skin, […]
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Mekala asks: What is amniotic fluid actually made of? Is it just water and stuff the baby poops and pees or is it like saliva? Just wondering. Thanks! Essential for the development of a healthy baby, amniotic fluid is a complex liquid that nourishes, facilitates growth, cushions and protects the growing fetus. Amniotic fluid begins to form almost as soon […]
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Tarin K. asks: What is the single worst crime you could commit, as in, what singular crime would net you the longest prison sentence? With the long-running debate over mandatory minimum sentences over the past couple of decades, it’s easy to forget that judges and juries often have a great deal of discretion when it comes to imposing criminal sentences […]
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Gary asks: Who invented the common shopping cart that seems to be the exact same design in most stores you go to? With the emergence of the automobile, home refrigeration, and the supermarket in the early 20th century, retailers soon realized they had a problem – people now were willing to purchase large quantities of food at once, but had […]
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Jeremy R. asks: What do the little buttons on Darth Vader’s suit do? It’s said that the best villains are the ones where you know almost nothing about them. However, thanks to the Star Wars Expanded Universe, we know almost everything about Darth Vader, even how he poops, and he’s still consistently voted to be one of the greatest cinema […]
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David S. asks: Here’s one for you, why exactly does Bond, James Bond, like his Martinis shaken and not stirred? A properly made martini is mostly dry gin with a bit of dry vermouth and ice (Epicurious recommends 5 parts gin to 1 part vermouth). All three should be placed into a cocktail shaker, but rather than shaking, they should […]
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Ryan L. asks: What makes Mexican jumping beans move around? Not actually a bean at all (beans being seeds from the family Fabaceae, also known as Leguminosae), the Mexican Jumping Bean is the seed pod of a shrub called Sebastiania pavoniana that has been implanted with larva from the Laspeyresia saltitans (also called Cydia deshaisiana) moth. When S. pavoniana begins […]
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Jon A. asks: Has there ever been an example of a word being spelled incorrectly in the dictionary and did that then become the new accepted spelling? Despite my sincerest efforts, I could find no documented instance of a misspelled entry name (the word being defined) ever found in a widely circulated, non-user generated English dictionary. (I’m still skeptical it’s […]
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Munawar asks: What do they put in windshield wiper fluid to keep it from freezing? Although there are other additives that are also sometimes used for the de-icing component in windshield washer fluid, the most commonly used ingredient is methanol, which combines with water, a dash of colored ink, and occasionally some form of detergent to make up windshield washer […]
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Sarah U. asks: Why are Harley motorcycles legal when they are so loud it hurts your ears? Anyone who’s ever witnessed a poker run knows that Harley-Davidson motorcycles are really, really loud. And since not everyone thinks that’s a good thing, in recent years, there have been efforts to stifle them. Straight off the line today, Harley exhaust systems can […]
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Lynda D. asks: Who first came up with BCE, CE, BC and AD and what is the difference between them? BCE (Before Common Era) and BC (Before Christ) mean the same thing- previous to year 1 CE (Common Era). This is the same as the year AD 1 (Anno Domini); the latter means “in the year of the lord,” often […]
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Ali K asks: I was just wondering why men have nipples and if it’s true that men can lactate? The human body really is an engineering marvel; even the most substandard model comes outfitted with the latest in 576 megapixel camera technology, a self contained bio-energy factory, self-healing triplicate outer protection that can handle quite a bit of rough-and tumble, […]
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Erica H. asks: How do we pee in terms of the nuts and bolts of it? Why can we only pee sometimes and not just anytime there is liquid in our bladders? What’s the trigger and how exactly is the pee expelled once the floodgates do open? Is it just gravity or do our stomach muscles squeeze our bladders? Inquiring […]
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