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TIL that for thousands of years, glue has been made by melting dead horses. This practice, although now less frequently, still happens to this day.

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PYrRE TIL there is a sound frequency that is said to induce a feeling of fear even when it is inaudible.
Oxoa TIL that Dr. Hutchinson in “Rocko’s Modern Life” was created because Nickelodeon wanted a positive female character with a strong hook. So they created one with a REAL HOOK for a hand.
peGb TIL that some of the ancient Native American pueblos have been continuously inhabited for over 1000 years
pbkA TIL Over 500 years ago, Leonardo da Vinci made an interesting observation about trees. He concluded that the total thickness of a tree’s branches is equal to the total thickness of the tree trunk. Trees across many species obey this rule. Explanations involve hydrological and structural theories.
Z8wXp TIL ‘Band of Brothers’ strived for historical accuracy to such an extent that multiple WWII veterans were flown in from all over the world to advise on the weaponry, battle tactics, and combat situations. As a final check, the veterans screened previews of each episode prior to their release.