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TIL that, before the Space Shuttle Challenger exploded, NASA management genuinely believed that the chances of a catastrophic failure to the Space Shuttle was 1 in 100,000. By the time the Space Shuttles were retired, they had a catastrophic failure rate of 1 in 67.5

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WkGAY TIL that some computer games used to be published in book form; the player would have to manually type in the code for the whole game that was printed in the book before they could play it
0wM8R TIL male platypus venom contains a hormone that promotes insulin release, called GLP-1; it's found in humans but degrades quickly. Platypuses make a long-lasting form of it, paving the way to new diabetes treatment; the platypus GLP-1 can be made in the lab so no platypuses will be needed for it.
epEDD Today I learned that the United Kingdom and the State of Oregon have close to the same land mass. But Oregon population has only has about 4.25 million to the UK’s 68 million.
N7mM1 TIL the Voyager I and II space probes, which are currently racing through interstellar space, each include a golden record with 115 analog-encoded photographs, greetings in 55 languages, a 12-minute montage of sounds on Earth and 90 minutes of music (including Chuck Berry's 'Johnny B. Good')
l8KV TIL tall men are more likely to have children and be in relationships than short men.