The first household refrigerators cost about $16,000, in today's money!
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There's a love mattress that is specifically designed for couples who sleep on each other's arms.
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Sunflowers can be used to clean up radioactive waste.
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If you chew gum when you study a subject and then chew the same flavor when you take the test, it will help you remember!
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If you had 10 billion $1 notes and spent one every second of every day, it would require 317 years for you to go broke.
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There are 293 ways to make change for a dollar.
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To get a song out of your head, try doing something like a puzzle or Sudoku.
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There are approximately three million shipwrecks on the ocean floor, worth billions in value and treasure.
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