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TIL of the Canal of the Pharaohs, which was the ancient forerunner of the Suez Canal, which was first built sometime in the 7th Century BC and was used until 767 AD.

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a8MEb TIL 45% percent of men are cutting their hair at home, compared to 21% of women in America
W7w8o TIL that one in 18 people have a third nipple. Known as polythelia, the third nipple is caused by a mutation in inactive genes.
jN6WR TIL A researcher once played a recording of an elephant who had died. The sound was coming from a speaker hidden in a thicket. The family went wild calling, looking all around. The dead elephant’s daughter called for days afterward. The researchers never again did such a thing.
xVrrw TIL about the Opabinia, one of the strangest fossils ever discovered. It had five eyes on a flat, shrimp-like body without legs, was covered in chitinous scales and had a long, extensible mouhtpiece, like the one found in common houseflies, but much longer.
m1vRv TIL that one of the most successful military campaigns in the world was the Liechtenstein campaign during the Austro-Prussian war.The army did not kill anybody and the army that sent 80 men returned with 81 men.This was because they befriended a person from the other side during the war :)