› added 7 years ago

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TIL that "idiot", "moron", "dolt" and "imbicile" were all valid psychological categories, which are no longer used due to the public assigning a negative connotation.

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Mer47 TIL one way the Romans measured time was through Saeculum - the period of time from the moment an event occurred (for example the founding of a city) until the point in time that all people who were alive to see it happen were dead.
RRol TIL there’s a deleted scene in ‘Back to the Future’ where Marty tells Doc that he’s worried hitting on his mother could make him gay.
d8kR8 TIL that Earth has about three TRILLION trees, or about 420 trees per person. There are more trees on earth than there are cells in a human brain or stars in our galaxy.
W7kZY TIL The inventor and theorist Buckminster Fuller was expelled from Harvard twice. The first time for spending all his money partying with a vaudeville troupe and the second time for his "irresponsibility and lack of interest".
VMQgB TIL that in 1977 the life expectancy in Cambodia was 18.91 years