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TIL About the Tsavo Man Eaters. A pair of male lions who systematically hunted and killed Railway Workers in 1898.

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Y7JlB TIL country star Merle Haggard got his start in music after seeing Johnny Cash play while he was an inmate at San Quentin Prison at age 21
xVMgb TIL That in 2018, the US Army started its own e-sports team as an attempt to recruit from a younger audience
5VMEQ TIL about sodium dodecyl sulfate, a detergent developed in the late 60's and which revolutionized protein analysis, as it unfolds proteins and gives them the same shape and electric charge density. This later led to the development of a technique called SDS-PAGE, which separates proteins by mass.
7rbQb TIL that before 2005 at Washington Reagan National Airport, 30 minutes prior to landing or following takeoff, passengers were required to remain seated. If anyone stood up, the aircraft was to be diverted to Dulles under military escort and the person standing would be detained and questioned
XEA9k TIL that most pencils are yellow because in the 1880s one manufacturer chose that color to indicate they were luxury pencils