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TIL that Magikarp is based off of a folktale about a carp swimming upstream and if it gets past the dragon gate it turns into a dragon. It's meant to be a symbol of passing the imperial exams

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6LMJ TIL of the Yamato 1, the first working prototype boat to use a Magnetohydrodynamic drive (MHD). Built by Mitsibishi, the ship’s drive electrifies sea water and utilizes magnetic fields to propel itself. The MHD uses no moving parts.
4ewJ TIL that after blogger Jeff Pataky wrote about the incompetence of the Phoenix police department, the Phoenix PD raided his home, seized his laptop, backups and cable modem, handcuffed and detained his female roommate for over three hours, and took his sons out of elementary school.
WkvWY TIL that the tobacco industry funded the study that gave us the theory of "Type A/B Personalities" in order to help obscure smoking's connection to heart disease
EgdRx TIL About Leonardo Da Vinci's bridge : Designed in 15th century, It's a self-supporting bridge design that does not require any nails or fasteners to hold its structure . The bridge is made of a series of beams that crisscross each other like scissors, using the pressure to hold each other stable.
5PJk TIL that the first school shooting to happen in the United States was the Enoch Brown school massacre, in which 2 Delaware (Lenape) American Indians broke into a school where they shot and scalped the students and their teacher. 4 others were taken prisoner.