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TIL There was an armed interceptor version of the SR-71 called the YF-12. It was the largest manned interceptor ever made, and held several world records for speed and altitude. It was cancelled after the secretary of defense held funding so it could be spent in the Vietnam war.

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KRoa TIL that many Asians wear surgical masks not only to stop viruses from spreading, but also because women want to avoid having to put on make-up before hitting the streets. Pop stars, actresses and models also wear them to avoid getting recognized in public and getting caught by paparazzi.
KWLE TIL that Mt. Massive and Mt. Elbert in Colorado are so close to each other in height that their supporters started competing with each other, with Mt. Massive supporters piling stones on the summit to increase its height, and Mt. Elbert supporters climbing the mountain to knock them back down.
xvkg TIL that Aubrey Plaza’s character in Parks and Rec (April Ludgate) was written into the show only after the casting director met her and insisted she somehow be put in the show.
b9Aga TIL that camels store upwards of 30kg of nutrient rich fat in their humps. During times of famine and drought, the fat is absorbed to nourish the camel and the hump actually goes limp like a deflated balloon when the fat is depleted.
Z8Y5v TIL It is legal in in 45 US states for doctors and medical students to perform pelvic exams on unconscious women for medical training, without explicit consent. This may also be done during consented medical procedures that are unrelated to gynecology.