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TIL mayday as a distress call is French M'aider.

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VMm9k TIL using the outward setting on a stapler is called "pinning", and it's meant for temporary staples that are easy to remove without mangling the paper.
d1nE TIL of the algae octopus which is sometimes described as “the only land octopus” because it will routinely crawl over exposed tidal beds to hunt in the scattered tidal pools
9wBVM TIL thousands of stingray injuries are reported each year, but fewer than 20 cases of death have been recorded world wide since 1945.
yQOOM TIL the movie "Dodgeball"(2004) has an alternate ending where Average Joe's gym loses, and the movie ends abruptly. It was changed because of negative test audience reactions.
4Xyyo TIL that a study from 2016 identified an overall 57% diminution in mean sperm concentration over the past 35 years in North America, Europe, Asia and Africa. Reports in South America indicated no significant alteration. An increasing trend of sperm concentration was identified only in Australia.