› added 12 years ago

300

TIL The “magic number” of people needed to create a viable population for multi-generational space travel has been calculated to about the size of a small village - 160.

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4XXWb Short answer: Every once in a (very long) while
A1yB TIL The word ‘Freelance’ was first used in the 1820 book 'Ivanhoe’. It referred to a knight with no allegiance.
El97 TIL L. Ron Hubbard commanded a sub chaser, fought a nonexistent sub, and shelled Mexico
grxV4 TIL there was a British plan during WWIl to seal up soldiers in a hidden Gibraltar bunker so they could observe German military movements even if Gibraltar was captured.
KYKL6 TIL that Referees who officiate the final NFL Super Bowl also receive championship rings.