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TIL of the Aircraft Nuclear Propulsion program, a failed project by the US Air Force to develop a nuclear powered jet engine

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meBo TIL Horror movie soundtracks sometimes include infrasound, which is sound below the range of human hearing. Even though we can’t hear it we can still feel it and infrasound has been shown to induce anxiety, heart palpitations, and shivering.
k9je TIL In most men, the lower hanging testicle is usually on the opposite side to your dominant hand.
6E8Lm TIL Army vet Gregory Holeman needed a ride to the hospital, but his care via the Veteran's Admin. didn't cover a 911 ambulance. He asked his sister to call a social worker but she misdialed and Jimmy John's answered; so JJ delivery driver Zack Hillmer (a U.S. Navy vet) drove him to the hospital.
QJ4jd TIL Top Gun's Charlie was based on Christine Fox, a mathematician who worked at the Center for Naval Analyses, just accross the street from the Navy's Topgun School. In 2013 she became the Defense Department's acting Deputy Secretary, making her the highest ranking female in the DoD's history
VBXyD TIL that jet is a gemstone derived from wood compressed for long periods of time, much like coal. It's color is the source of the term "jet-black".