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TIL ornithologist Ted Parker was able to identify over 4,000 bird species by their songs alone. He died in a plane crash at age 40 surveying the Ecuadorian forests.

Read more allaboutbirds.org

via reddit.com

pYrOA TIL that during the second flight of the BAC TSR-2, the pilot had to pull off the throttle to prevent loss of vision because the fuel pump vibrated at the resonant frequency of the human eyeball.
lo7p7 TIL Written 4500 years ago The Diary of Merer is the oldest papyri ever discovered. It details the daily life of workers who built the Great Pyramid of Giza
9YXjG TIL that humans are 99.9% genetically identical to each other. The 0.1% difference account for the various differences, like skin color, hair color, eyes, and even diseases.
neOYd TIL 9 species of Shark have evolved to walk on land, allowing them the walk between tide pools while hunting for prey.
l5mB TIL: A former king of Sweden became a pirate after he lost the throne