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TIL on iOS, you can hold down the 0 key and it you can select the degree (°) symbol!

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v19mj TIL that 'nose art', or the practice of painting pin-ups or cartoons on the front of war planes, died out in the early 1970s when Air Force Chief of Staff John Ryan called for a moratorium on the practice. It's been quietly making a comeback in recent years, albeit now strictly controlled.
epygb TIL Robert Todd Lincoln was present at two Presidential assassinations, his father’s not one of them. He also had his life saved by the brother of John Wilkes Booth.
ZLDQ TIL after male giraffes fight, they often have “make-up sex”; these same-sex interactions in giraffes have been found to be more frequent than heterosexual mating.
nePAP TIL eating beets can cause pink urine
a8v7M TIL that an SLR used a prism that utilizes the "true reflection" quality that two mirrors set at a 90-degree angle viewed from 45 degrees demonstrates in order to provide a true image, despite being reflected 3 times.