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TIL that humans have trained rats to sniff out land mines in Vietnam.

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jLJE TIL that during the Atlantic slave trade era, Brazil imported more slaves than any other country, and that Brazil was the last country in the Western world to abolish slavery.
KgJ9 TIL that the first thing sold on the internet was a bag of marijuana between M.I.T. and Stanford using Arpanet accounts.
X017E TIL that people with HIV still live about 7 years shorter than people without HIV, and experience major chronic diseases (liver disease, kidney disease, lung disease, heart disease, diabetes, and cancer) about 10 years earlier than people without HIV.
5QZk TIL children who speak Mandarin are far more likely to develop perfect pitch because of tone association with words, and that one word can have up to four different meanings depending on the pitch at which it is spoken.
gADb TIL NFL cheerleaders would earn more money serving beer at concessions stands