Here Are All of the US Presidents Ranked By Their IQ

Franklin D. Roosevelt

Roosevelt was the president through WWII. That was no easy task. Some history teachers and sociologists consider Roosevelt to be the most important president in American history. 

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The More You Know

  • The world's most densely populated island is the size of two soccer fields.
  • Fleas can jump up to 100 times their body length.
  • You spend about 10% of the time you're awake blinking.
  • More than 800 languages are spoken in Papua New Guinea.
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