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TIL that “Adrenalin” is a pharmaceutical trade name. The scientific name for the hormone generated by the Adrenal gland is Epinephrine.

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RMk9 TIL there’s a parasite that can “hijack” the brain of invertebrates, amphibians, and mammals
GApN TIL that there is DNA evidence proving that Polynesians visited the Americas (Chile) in the 1300s, well before Columbus ever reached the New World; there are also stories of Polynesians seeing Antarctica around the year 650, “a place of bitter cold where rock-like structures rose from a solid sea”
a875J TIL of the US Librarian of Congress. Appointed by the President and serving a term of ten years, they are the head of the Library of Congress with a broad range of responsibilities. Incumbent Carla Hayden appointed in 2016, is both the first African American and woman to hold the office.
DQadV TIL people gave fast-food hamburgers to rural crows to try to find out why urban crows are getting high cholesterol
Dl7e TIL Medieval writers frequently drew glorious battles between knights and snails