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TIL Mars had an oxygen-rich atmosphere around 4 billion years ago

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7rJy7 TIL: Tensegrity Structures and how facilitating they are
e0J54 TIL about the Nanda Devi Plutonium Mission was a joint operation by the United States Central Intelligence Agency and the Indian Intelligence Bureau that resulted in a nuclear device getting lost in the Himalayas. It was never found.
ADROo TIL there is no known Chinese art depicting the panda bear that predates the 20th century.
xVBGB TIL At Andrew Jackson's funeral in 1845, his pet parrot had to be removed because it was swearing loudly.
6J97 TIL that the call sign “Air Force One” was created in 1954 to avoid confusion, after an incident where a commercial flight and President Dwight D. Eisenhower’s plane carried the same number in the same airspace.