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TIL After William Harvey discovered blood pathways in 1616, people tried to use fluids such as beer, urine, milk, and non-human animal blood as a blood substitute.

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7r5YL TIL that the most successful hunter in the animal kingdom is the dragon fly which catches 95% of the prey it pursues (compared to owls, hawks, and falcons 25% success rate). This is due to an impressive suite of evolved adaptations that have remained largely unchanged since the Permian age.
4kdEb TIL there are many different styles of French Toast. Hungarian French Toast is a savory version often served with other foods, while Hong Kong French Toast puts the filling inside the bread and then fries it. There's even a Bengali version, where peppers and vegetables are mixed into the batter.
9Y9xG TIL Egyptian lawyers were banned from Roman courts during the time Rome ruled over Egypt. This is because they mocked Roman judges and their decisions. Some even made up jokes and songs to defend political prisoners.
ejjb TIL that a rival butcher collected 25 cats, starved them, and then snuck them into his competitors store after it shut down for the day. The cats ate out the Butcher Store before they could be attacked by police
VMoeZ TIL that 27-yr-old grad student, Alexandra Elbakyan, put 50 million stolen research articles online for free. Her reason?...Worldwide liberation of knowledge from the tyranny of for-profit publishers. Many academics and longtime advocates for open scholarly research seemed to support her ideology.