TIL In 2003 Space Shuttle flight director knew that Columbia's Thermal Protection System was damaged but decided to not tell the crew. He thought it would be better for them to have a happy successful flight and die unexpectedly during entry than to stay in orbit with oxygen running out [source, comments]

Good Idea: Know how to limit your online footprint

https://www.wired.com/story/how-to-be-more-anonymous-online/

TIL that Gasoline is produced differently in summer and winter, which is why gas prices drop so steeply during the winter. [source, comments]

Today I learned, French automaker Citroën, sabotaged wartime Nazi truck production by moving the notch on the oil dipstick down. The engines would not have the correct amount of oil and prematurely fail. [source, comments]

TIL that dogs intentionally try to make humans laugh. They understand that laughter means play, and play is positive. [source, comments]

TIL that when his production company could not afford a major star for his first western, director Sergio Leone hired a man with no name at the time in Hollywood and commented about him that he “had two expressions: with hat and no hat“ - Clint Eastwood. [source, comments]