Strange Odor Coming From Vents Turns Out to Be Man's Worst Nightmare

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"You need to get him out of here," the repairman said. "And you need to call the police." Frightened, his parents ushered Grady outside. What was going on? His mother dialed 911...

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The More You Know

  • Mysterious sand dune holes baffled Indiana for years.
  • Earth is 4.54 billion years old.
  • A team of six women programmed the first digital computer.
  • A typical cloud weighs around 1.1 million pounds.
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