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TIL that if you add 250ml of ethanol to 250ml of water, you get less than 500ml of liquid. This is due to strong hydrogen bonding that draws the different molecules close together, and because ethanol interferes with any open structures in the water, causing the molecules to pack closer together.

QJ5pk TIL until about the ninth week of gestational age the external genitalia of males and females look the same. After this stage, the what ends up being the scrotum raphe (the vertical line on the scrotum on males) grows from the labioscrotal folds which grow in to the labia on females
v7kD TIL: During the war, more than 200,000 Polish fought for the UK but Poland was not invited to the Victory Celebrations for fear of upsetting Stalin
6xGJ TIL of Terry Jo Dupperrault who in 1961 at 11 yrs old survived 4 days at sea on a cork float after the boat she was on sank. The boats captain murdered everyone aboard including her parents and siblings. Police thought the soul survivor was the boats captain.
5V9dQ TIL That Europeans In The Middle Ages Used To Sleep In Two Shifts, Dedicating The Period Between Their 'First Sleep' And 'Second Sleep' To A Range Of Activities
Xapk TIL that before performing in Japan, the Beatles received an anonymous message: “Do not go to Tokyo. Your life is in danger”. 35,000 police officers were tasked to protect the group. The Japanese audience was so polite and quiet, they were able to hear how bad the live performance really was.