In Brazil, prison inmates can reduce their sentence by 4 days (up to 48 days a year) for every book they read and write a report on.
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Colorado switched mile marker "420" to "419.99" to stop people from stealing it.
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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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Anthony Greco, aged 18, became the first person arrested for spim (unsolicited instant messages) on February 21,2005.
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