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TIL if engulfed in flames in a forest fire, some fire trucks can go into burnover mode when a sprinkler system keeps watering the truck (including each tyre) while the fire fighters hide behind heat shields.

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pdn8 TIL that if you don’t sleep, your brain cells soak in their own filth. Sleep may clear out nervous system metabolites, which are waste products that can be toxic.
OjXe TIL in 1999, Daylight Savings Time thwarted a terrorist bombing in Israel. The West Bank had changed clocks while Israel hadn’t. The terrorists had set timers on bombs which detonated an hour early, killing three terrorists.
R5Me7 TIL Ancient Human populations living in the Indian subcontinent had a taller average height than modern humans living in the wealthiest developed countries
9wMBr TIL, a medieval map, one of the oldest maps in existence, depicts a mythical creature that farts at hunters, killing them
m1l9E TIL that the remains of Henry Rathbone and Clara Harris, witnesses to Lincoln's assassination, were disinterred and disposed of after cemetery management determined that their graves were long abandoned.