Colorado switched mile marker "420" to "419.99" to stop people from stealing it.
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Anthony Greco, aged 18, became the first person arrested for spim (unsolicited instant messages) on February 21,2005.
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Al Capone earned $105m per year from alcohol and rackets during the Prohibition era. Today, this would be equivalent to $1.4b per year.
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Tickling was a form of torture used in ancient China on nobility because it left no mark and recovery was quick.
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Just before the US started bombing Baghdad, nearly $1 billion dollars was stolen from the Central Bank of Iraq and is now the largest bank robbery in history.
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In 2010, police in Belfast, Northern Ireland, used ice cream van music to calm angry teen rioters - and it worked!
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