› added 9 years ago

145

TIL that tears cried for different reasons have different structures which are visible when viewed under a microscope.

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9YpD6 TIL airline crew members are exposed to so much cosmic radiation in their jobs that they're classified as radiation workers
gDX4 TIL the highest-ranking death metal album of all time on the Billboard 200 is Dethalbum III by the virtual band Dethklok from Adult Swim’s Metalocalpyse.
gLbL TIL that after using the restroom, orthodox Jews recite a blessing in which they thank God for giving us all buttholes
Vky0 TIL that if the Andromeda Galaxy were visible to the naked eye, it would be six times larger than the moon in the night sky
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.