Category Archives: Articles

Sleepwalking Murders

sleepwalking

Carl asks: What happens if you are sleep walking and you kill someone? Anyone who has ever tried to reason with a sleepwalker knows they can seem to be awake, yet have bizarre and irrational behaviors. Stubborn during the best of episodes, and inconsolable, unreasonable and intense in the worst, it is not hard to imagine these walking dreamers acting […]

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The 72 Second Message from Outer Space

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On August 15, 1977, in Delaware, Ohio, SETI researchers from the Ohio State University detected a 72 second radio signal originating from somewhere around the constellation of Sagittarius. Because of the signal’s location, frequency and unique signature, it was quickly dubbed the “Wow!” signal, and since its discovery, speculation has run rampant that it was a message from an extra-terrestrial […]

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Weekly Wrap Volume #43

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This is a weekly wrap of our Daily Knowledge Newsletter. You can get that newsletter for free here. Hobbs and His Lock Picks: The Great Lock Controversy of 1851 In April 1851, Alfred C. Hobbs boarded the steamship Washington bound for Southampton, England. His official duty was to sell the New York City-based company Day and Newell’s newest product – […]

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Two Million Downloads

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After just about six months since launching, our Daily Knowledge Podcast has reached 2 million downloads.  Thanks for listening!  If you have any feedback for us on it, we’re always interested. If you haven’t checked it out, you can listen to the podcast episodes here online, or subscriber via iTunes here, or simply use this xml link to subscribe via […]

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Glowing in the Dark, The “Radium Girls”

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On December 21, 1898, Marie and Pierre Curie discovered the radioactive element radium (in the form of radium chloride), extracting it from uraninite. They first removed the uranium from the uraninite sample and then found that the remaining matter was still radioactive, so investigated further. Along with the barium in the remaining substance, they also detected spectral lines that were […]

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The Origin of Competitive Eating Contests

competitive-eating

America’s Independence Day is celebrated across the country with fireworks, hot weather, pool parties, and barbecues. For the thousands that gather on Coney Island in America’s largest metropolitan, New York City, July Fourth is commemorated with another annual tradition – the Nathan’s Hot Dog Eating Contest. Beginning in 1916, the Hot Dog Eating Contest has become the “de facto Olympics” […]

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The Basics of 3D Printing

3d-printer

Fatima asks: How do 3D printers work? Originally built on the same technology as an ink jet printer, the basic process behind 3D printing is so easy to understand, replicate and implement, today it is used to manufacture everything from toys to body parts. Multiple Layers Fundamentally, 3D printing involves building an object by putting down successive layers of materials, […]

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The Making of Vinegar

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Jeff asks: Is it true that wine vinegar is just wine with acetobacter added? Yep, but the process from start to finish is a little more complicated than just that. More than Just Wine Vinegar can be made from any of a variety of carbohydrates: “Fruits, such as apples, grapes, berries, melons and coconuts have been turned into vinegar. Natural […]

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Hobbs and His Lock Picks: The Great Lock Controversy of 1851

lock-picks

In April 1851, Alfred C. Hobbs boarded the steamship Washington bound for Southampton, England. His official duty was to sell the New York City-based company Day and Newell’s newest product – the parautopic lock – at a trade show – London’s Great Exhibition. But Hobbs had something a bit more nefarious up his sleeve, or rather in the small trunk […]

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The Fascinating Story of How the “What Would Jesus Do?” Slogan Came About

WWJD

What Would Jesus Do?, often shortened to WWJD? or W.W.J.D.  is a slogan so famous that millions of objects have been emblazoned with it. However, the person who came up with “W.W.J.D.” never saw a penny of the millions of dollars companies across the globe have made from it. The earliest known instance of the full slogan “What Would Jesus Do” […]

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