Bon-hwa S. asks: Worms drown in the water, so how do fish know they are food? Is the reason they like them just the movement? Thanks! Worms, or more specifically earthworms which are by far what most people mean when they use the term “worms” in the fishing scenario, don’t live in water. In fact, the reason you see so many on […]
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Erin G. asks: Why do we color code electric wires the way we do? Black, white, green, red, blue, orange, brown and grey, the color of the insulating sheath on an electrical wire generally designates its purpose. So, before you start fiddling around with that new light fixture, besides switching off the breaker to a given circuit, it’s a good […]
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When I was a kid, my parents had a collection of historic old, yellowed newspapers. For example, I distinctly remember an old Washington Post newspaper sitting on a bookshelf from July 21, 1969 with the headline “The Eagle Has Landed – Two Men Walk on the Moon.” Or a fading, brownish-yellow one from August 8, 1974 with the big headline, “Nixon […]
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From the first Trinity test in Alamogordo, New Mexico on July 16, 1945 until a unilateral moratorium was declared on October 2, 1992, the United States conducted hundreds of nuclear tests around the globe and in the lower 48. Early on, nearly all of these nuclear devices were detonated above ground, including those tested between 1952 and 1958 at the […]
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Jim asks: Do non-human animals ever get sunburned? Why don’t things like snakes and other cold blooded animals seem to get burned even though they lay in the sun all day? Without a protective coating of feathers, fur or scales, pretty much any animal with exposed skin can get a sunburn; luckily, most animals have adapted methods of avoiding the […]
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Melissa K. asks: Do high end wine makers really have people walk all over grapes with their bare feet? Perhaps no image is more synonymous with the act of wine making than that of a person smushing grapes with their bare feet to extract the precious juices contained therein (in the grapes, not the inevitably sweaty feet). But did winemakers […]
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Karl W. asks: Why are calico cats always female? While any breed of cat can be born with calico fur, the vast majority of these cats are female, with only about one in three thousand calico cats born male according to the Humane Society. So why are most calico cats female? As you may or may not be aware, females […]
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This is a weekly wrap of our popular Daily Knowledge Newsletter. You can get that newsletter for free here. When Lincoln Was Almost Assassinated Nine Months Before He was Assassinated In August 1864, the Sixteenth President of the United States of America was nearly assassinated about nine months before he was actually assassinated. This is the story. Throughout the Civil […]
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Matt J. asks: Was the peanut gallery expression really originally a racial term? Used to refer to those giving unsolicited (and unvalued) advice, the expression “peanut gallery” has its roots in late 19th century vaudeville, although for some, the phrase is considered a racial slur. A typical vaudevillian show of music, drama, comedy, acrobatics, dance and other acts was performed […]
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It was June 1931 when the law finally caught up with Al “Scarface” Capone for good. After three years of building a case against Capone for tax evasion, the FBI was finally ready to arrest and try the notorious gangster. In the October of that same year, he was found guilty on five counts of tax evasion between 1924 and […]
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Few things in childhood are more traumatising than waking up one morning to find your beloved pet fish, Michael Scofield, floating upside down in his tank (true story); his tiny fishy light cruelly extinguished before his time. But why do they float upside down when they decide it’s time to take a ride on the porcelain express? The answer to […]
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Karla S. asks: Why does the week start on Sunday? Why not Wednesday or Friday? As with so many things passed down to us from antiquity, religion is the reason the calendar week starts (for many of us) on Sunday. The first day of the week (for many), Sunday has been set aside as the “day of the sun” since […]
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John I. asks: Is there anyone buried in the tomb of the unknown soldier or is it just all symbolism? It’s Armistice Day, November 11th, in the nation’s capital. It is a brisk day at Arlington National Cemetery. Dignitaries stand silently on the third anniversary of the ending of World War I, watching as a single white casket is lowered […]
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Geoff G. asks: Can toilet seat covers they have in public restrooms stop you from getting an STD from toilet seats someone who had one sat on? Flimsy white sheets shaped like the seat, paper toilet liners can be found in many public bathrooms. Notably, however, while they may provide reassurance to the germaphobic and finicky, toilet seat covers have […]
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Romi asks: They said on a documentary on Netflix I watched that the battle of Gettysburgh started as a fight over shoes. Is this true? Marking the Confederacy’s last stab at a major offensive in a northern state, the three brutal days of fighting in July of 1863 around the town of Gettysburg, Pennsylvania mark the bloodiest battle of the […]
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Brian S. asks: How did they get the space ships on the moon off when there is no oxygen there? Whether it’s two-strokes or four, one cylinder or eight, most of the engines we use today are powered by the internal combustion of fuel and air; however, mixing gasoline and oxygen isn’t the only way to generate the energy needed […]
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Brandi N asks: How do other primates deal with the umbilical cord and placenta when the baby is born when they don’t have any sort of medical help to make sure everything’s handled right? Other than certain modern humans, some marine mammals (like whales and dolphins), chimpanzees and a few domesticated animals, mammal mothers typically eat the afterbirth. While most […]
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Ben Franklin accomplished a lot of things over his 84 years on Earth. He was an influential newspaper editor and printer. He was an inventor, known for bifocals, the lightening rod, and Franklin stove. He was the governor of Pennsylvania for three years. He was an American founding father, who had a hand in drafting the Declaration of Independence. The […]
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