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TIL mature cystic ovarian teratoma (ovarian tumor) can differentiate to multiple tissues in the body, including, hair, teeth...

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MeDOK TIL It will take only 30 japanese hornets to destroy whole bee hive containing 30 000 bees. Unlike the European bees, Japanese bees have a defense against the hornets. When a hornet scout approaches a hive the bees hide, let him enter and then emerge in a cloud formation to cook him alive.
yK1e TIL While parachuting, an American aviator downed a Japanese fighter plane by shooting the pilot in the head with his sidearm.
1pY4 TIL The average male medieval peasant ate between 160% to 200% more calories than your average male now. Which kind of explains why it’s so hard to sustain 1500 calorie diets…
mBoo TIL the average American eats approximately 1,500 PB & J sandwiches before graduating from high school
neoZd TIL There is a theory that Grandpa Jo in 'Charlie and the Chocolate Factory' is the story's villain. Jo claims to be unable to work, accepts Charlie's money for tobacco, relies on his poor family to feed him. Jo's deception is revealed when Charlie finds a golden ticket, & begins singing and dancing