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TIL about Project Plowshare which was a U.S. government program from 1957 to 1977 which sought to develop peaceful uses for nuclear explosives which included rock-blasting, creating new elements, studying nuclear physics, and gathering geological and Earth science data.

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W7ROo TIL During the Vietnam War the act of "Fragging" was when US troops would toss a grenade in their commanding officers tent; known and suspected fragging cases by explosives in Vietnam from 1969 to 1972 totaled nearly 900 incidents.
vPbaj TIL that even enemies of the Aztecs who were chosen for sacrifice understood their role to be sacrificed to the gods, because they practiced the same religion. Victims were expected to greet passerby, bless children, visit people in their homes, and even lead sacred songs, processions, and dances.
wjaP TIL Majel Barrett-Roddenberry, Gene Roddenberry’s wife, appeared in almost every Star Trek TV series and movies (other than Enterprise). She played Nurse Chapel, Lwaxana Troi, and the voice of the Enterprise-D and E onboard computer.
b9ep4 TIL that cheetahs are so nervous and excitable that San Diego zoo gets each 3 month old chetah a 6 month old rescue puppy as a life long friend. The dog's outgoing and brave nature shows his buddy that new situations are safe.
5Y9KQ TIL JH Kellog, inventor of granola, was estranged from his brother WK Kellogg. JH wrote a letter seeking to reopen the relationship. His secretary decided her employer had demeaned himself in it and refused to send it. The younger Kellogg did not see it until after his brother's death