Just bumped into this PDF. While most of it is interesting, what caught my attention was the bit at the end about Ning Li. "Ning Li was a Chinese-American physicist. She is known for her research into anti-gravity. In 1999, she left the university to form a company, AC Gravity LLC, to continue anti-gravity research. Her work and the circumstances leading up to her death in 2021 have resulted in multiple conspiracy theories." A 2023 article published by the Huntsville Business Journal cited an...