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TIL a hearing test for human babies was developed based on a study on how owls hear. The pupils in both owls and humans dilate when a new sound is heard

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via reddit.com

m1vYP TIL that if South Korea enters a state of war, its army becomes subordinated to a US Army general from the Combined Forces Command, not the President or another Korean.
oxeL TIL that in ancient Rome during funerals, a person called an Archimime would walk behind the deceased and imitate the person like they were still alive.
neGKY TIL of Ronald Maddison, a British soldier who died after taking part in a voluntary nerve agent experiment to pay for an engagement ring for his fiance
LQr9m TIL there is a vaginal sound system called the "Babypod" that pregnant women can put inside their vaginas in order for their unborn babies to listen to music and that the volume of it is limited to 54 decibels, which is about the same level as a washing machine.
EKKw TIL that Japan planned to deploy biological weapons against the city of San Diego, California, codenamed “Operation Cherry Blossoms at Night”, which was set for action on September 22, 1945, but not realized due to Japan’s surrender on August 15, 1945.