Alexander the Great’s Elite Hand-Picked Expert Troops: Silver Shields

Alexander the Great was one of the most talented generals who ever existed, but he was helped a great deal by his exceptional army. While we tend to think of Alexander’s whole army, including his Phalangite phalanx, as an elite force, Alexander had his own core of hand-picked expert troops. These men were a type…

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Construction of the Brooklyn Bridge Took 14 Years—And Multiple Lives

Horrific workplace accidents claimed a string of lives and left its designer dead and his son crippled. Fourteen tons of fireworks illuminated the New York night on May 24, 1883, to celebrate the completion of one of the greatest engineering feats of the Gilded Age—the Brooklyn Bridge. Billed as the “Eighth Wonder of the World,” the longest suspension bridge…

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Men Notice Messes As Much As Women. Here’s Why They Don’t Clean Up.

On a typical day, men spend a third as much time cleaning as women. Does that make women beacons of cleanliness, while men are genetically unable to see the messiness in their midst? This myth is a common explanation for why men don’t do as much housework as women. Men walk into a room and apparently can’t see the dust bunnies…

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What Physics Reveals About the JFK Assassination

A new study suggests the ‘grassy knoll’ JFK assassination theory is bogus. When dressmaker Abraham Zapruder brought his camera to see President John F. Kennedy’s motorcade pass through Dealey Plaza in Dallas on November 22, 1963, he could never have suspected that he’d witness anassassination—or that his home movie would become one of the most…

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Revealed: The 15 Most Dangerous Places to Live

  Security guard on Ipanema Beach in Rio de Janeiro, Brazil, which ranked as the most dangerous place in the world to live. (Photo courtesy of Getty) Have you ever thought of moving to another country, but worried about your safety? It might be safer to live outside the United States, according to InterNations, which…

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How Sunburns and Sun Tans Work

How Vitamin D Works All human beings need Vitamin D in order for their bodies to grow and function properly. Vitamin D helps the body metabolize calcium. When children lack vitamin D, their bodies cannot use calcium properly and they develop rickets. Rickets is marked by “soft bones” and things like bowleggedness and knock-knees.Cod liver…

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Who invented Math?

we’re sure that more than one student has wished that he could travel back in time and prevent someone from inventing math. Of course, that same wish probably has been made with regard to all subjects that result in homework and difficult tests from time to time. But would that really be possible…even if time travel existed? Probably not! Why? Unlike a light bulb…

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Thomas Jefferson and Sally Hemings

A Brief Account   Years after his wife’s death, Thomas Jefferson fathered at least six of Sally Hemings’s children. Four survived to adulthood and are mentioned in Jefferson’s plantation records:  Beverly, Harriet, Madison, and Eston Hemings.  Sally Hemings worked for two and a half years (1787-89) in Paris as a domestic servant and maid in Jefferson’s…

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What Happens After You Flush?

Your Home Plumbing System Being mostly out of sight your home plumbing system tends to remain out of mind until something goes wrong. While it may appear to be a complex maze of pipes, fittings and valves, your home plumbing system is actually rather simple and straightforward. A home plumbing system is made up of…

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