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TIL an Austrian woman’s firestove exploded when she used a piece of wood that grew around a WWII grenade that was stuck in it

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XEpor TIL Nasa developed a internet protocol that could connect our entire solar system called DTN (Disruption Tolerant Networking)
yQ9lw TIL the SR-71's sonic boom was used to "remind [heads of state] that they were doing things that were counter to US policy."
8aalX TIL that physicist Richard Feynman encouraged his sister Joan to study the universe, despite their mother's belief that women were incapable of fully understanding science. Joan went on to become an astrophysicist.
d865K TIL that even a gentle human voice is enough to make apex predators such as mountain lions flee in terror
OoOZ6 TIL Meg and Jack White of the White stripes publicly portrayed themselves as siblings despite the fact that they weren't related and had married in 1996 prior to the band's formation.