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TIL: the "legs" you see in old high speed footage of nuclear tests are a result of the explosion chasing down the wires of the support tower. The metal of the wire conducts heat faster than the surrounding air, allowing the pulses to move out ahead of the rest of the blast.

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Z8QKo TIL Elvin Bishop's "Fooled Around and Fell in Love" was sung by his background singer Mickey Thomas. Bishop felt his gravelly voice didn't suit the song and asked Thomas to take lead. It was Bishop's biggest hit, peaking at #3 on the Billboard Hot 100 in May 1976.
VBpMD TIL that Stockard Channing, who played Rizzo in Grease, was actually 33 years old when she portrayed a high school student.
XErVP TIL that on the set of "Resident Evil: The Final Chapter" the stunt double for Milla Jovovich was so badly injured that her arm was amputated. Olivia Jackson had performed stunts in several hit films including Star Wars, Mad Max, Avengers, and Guardians of the Galaxy.
ZpvRB TIL John F Kennedy was a WW2 war hero. In 1943 the torpedo bost he was in command of was struck by a Japanese destroyer. When the boat sank, Kennedy swam a critically injured crew member 3.5 miles to shore. They were rescued by writing a message on a coconut husk.
p8vYb TIL: New-born human infants can differentiate between genders, showing a clear preference for females. They're especially attracted to their own mother's face. They're also better at adults when recognizing features on a monkey's face.