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TIL about the gyro monorail a form of rail transport that ran on only 1 set of wheels and ran on a single line of railway track.It stayed upright using a gyroscope and could even bank on turns. It never made it past the prototype stage due to the costs of needing a gyroscope in every car in a train.

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e0p84 TIL The US did not have only two atomic bombs in WWII. They had a third ready to drop on Japan on August 19th that was halted by the surrender. Three to four more bombs were slated to be produced every month in support of a US invasion if Japan did not capitulate.
KYNXR TIL The Mendoza Line is baseball jargon for a .200 batting average, the supposed threshold for offensive futility at the Major League level. It is named after shortstop Mario Mendoza, who failed to reach .200 five times in his nine big league seasons.
DZKv TIL That in Jackass’ infancy, Saturday Night Live offered the cast to perform a weekly stunt on the show, but it was declined in favor of the standalone show
eA1b TIL that a young entrepreneur secretly lived in AOL’s HQ for 2 months, eating free food, using gym & showers, sleeping in conference rooms while working on his start-up. Everyone assumed he worked there
m10Lp TIL that before joining Kiss, drummer Eric Carr's prior band, Creation, was performing at a nightclub when a fire broke out. Carr made it out but returned to help his bandmates escape. He was able rescue one but two band members along with 22 others all perished.