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  • In the Durango desert, in Mexico, there's a creepy spot called the "Zone of Silence." You can't pick up clear TV or radio signals. And locals say fireballs sometimes appear in the sky.
  • Bill Gates' first business was Traff-O-Data, a company that created machines which recorded the number of cars passing a given point on a road.
  • Uranus' orbital axis is tilted at 90 degrees.
  • The final resting-place for Dr. Eugene Shoemaker - the Moon. The famed U.S. Geological Survey astronomer, trained the Apollo astronauts about craters, but never made it into space. Mr. Shoemaker had wanted to be an astronaut but was rejected because of a medical problem. His ashes were placed on board the Lunar Prospector spacecraft before it was launched on January 6, 1998. NASA crashed the probe into a crater on the moon in an attempt to learn if there is water on the moon.
  • Outside the USA, Ireland is the largest software producing country in the world.
  • The first fossilized specimen of Australopithecus afarenisis was named Lucy after the paleontologists' favorite song "Lucy in the Sky with Diamonds," by the Beatles.
  • Every human spent about half an hour as a single cell.
  • Every year about 98% of atoms in your body are replaced.
  • Hot water is heavier than cold.
  • Plutonium - first weighed on August 20th, 1942, by University of Chicago scientists Glenn Seaborg and his colleagues - was the first man-made element.
  • If you went out into space, you would explode before you suffocated because there's no air pressure.
  • The radioactive substance, Americanium - 241 is used in many smoke detectors.
  • The original IBM-PCs, that had hard drives, referred to the hard drives as Winchester drives. This is due to the fact that the original Winchester drive had a model number of 3030. This is, of course, a Winchester firearm.
  • Sound travels 15 times faster through steel than through the air.
  • On average, half of all false teeth have some form of radioactivity.
  • Starch is used as a binder in the production of paper. It is the use of a starch coating that controls ink penetration when printing. Cheaper papers do not use as much starch, and this is why your elbows get black when you are leaning over your morning paper.
  • An ordinary TNT bomb involves atomic reaction, and could be called an atomic bomb. What we call an A-bomb involves nuclear reactions and should be called a nuclear bomb.

  • At a jet plane's speed of 1,000 km (620mi) per hour, the length of the plane becomes one atom shorter than its original length.
  • The first full moon to occur on the winter solstice, Dec. 22, commonly called the first day of winter, happened in 1999. Since a full moon on the winter solstice occurred in conjunction with a lunar perigee (point in the moon's orbit that is closest to Earth), the moon appeared about 14% larger than it does at apogee (the point in it's elliptical orbit that is farthest from the Earth). Since the Earth is also several million miles closer to the sun at that time of the year than in the summer, sunlight striking the moon was about 7% stronger making it brighter. Also, this was the closest perigee of the Moon of the year since the moon's orbit is constantly deforming. In places where the weather was clear and there was a snow cover, even car headlights were superfluous.
  • According to security equipment specialists, security systems that utilize motion detectors won't function properly if walls and floors are too hot. When an infrared beam is used in a motion detector, it will pick up a person's body temperature of 98.6 degrees compared to the cooler walls and floor. If the room is too hot, the motion detector won't register a change in the radiated heat of that person's body when it enters the room and breaks the infrared beam. Your home's safety might be compromised if you turn your air conditioning off or set the thermostat too high while on summer vacation.
  • Western Electric successfully brought sound to motion pictures and introduced systems of mobile communications which culminated in the cellular telephone.
  • The wick of a trick candle has small amounts of magnesium in them. When you light the candle, you are also lighting the magnesium. When someone tries to blow out the flame, the magnesium inside the wick continues to burn and, in just a split second (or two or three), relights the wick.
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