The Deadliest Sports on Earth: Ranked

BASE Jumping

BASE stands for Building, Antenna, Span, and Earth. These are the structures that BASE jumpers seek to, well, jump off of. BASE jumping was previously the most dangerous sport of all time, but federal and state laws have dissuaded plenty of people from wanting to give it a shot. Still, about 15 people die because of it annually.

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The More You Know

  • The sun and moon appear to be the same size in the sky because of an astonishing coincidence: the moon is 400 times smaller but 400 times closer.
  • The speed of a computer mouse is measured in "Mickeys."
  • People write love letters to trees in Australia via email.
  • Sony’s PlayStation 4 costs $381 to manufacture.
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