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TIL snails in the family Euconulidae have translucent shells so the colors seen, sometimes resembling a cinnamon bun, are actually from the organs and body

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via reddit.com

e0Q7k TIL that oil magnate J. Paul Getty, one of the richest humans in history, was so miserly that he laundered his own shirts by hand, reused envelopes and paper, made all the phones in his home coin-operated, and stood in line for hours for show tickets to save 50 cents
BrDvK TIL that hippo sweat contains a chemical that has an SPF factor to prevent them from getting sunburned.
0wBjy TIL that a tree in Glastonbury, England, is said to flower on Christmas day—and people were disappointed that it did not obey the switch to the Gregorian calendar in 1752.
697EZ TIL When humans take a breath, they replace only 15% of the air in their lungs with fresh air. When dolphins take a breath, they replace 90% of the air in their lungs with fresh air
baE7 TIL that Mayday procedure was originated Frederick Stanley Mockford which was given the task to think of a word that would indicate distress and would easily be understood by all pilots and ground staff in an emergency.