› added 4 years ago

203

TIL that our blood is red because it is rich in iron. Some animals have blue blood because it is rich in copper.

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E1YV7 TIL that George Lucas' Skywalker Ranch has its own fire department, and they have a mutual agreement with the government to respond to fires off the compound.
VBpVB TIL Mao Zedong's eldest son was killed by a US napalm strike on North Korea
XlAj TIL Albert Einstein once needed a letter of recommendation from Madame Curie to secure a job.
5j1B TIL Liam Neeson was training to be a teacher before he punched a student who pulled a knife out on him. He then gave up on his teaching dream and went into acting.
LkWDd TIL in World War II, a few engineers wanted to reinforce the (returned) fighter planes where most of the bullet holes were. Mr. Abraham Wald then said: Let's reinforce them where no bullet holes are instead - because apparently, airplanes hit in these spots did NOT return.