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TIL pus is white blood cells that died fighting off infection.

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4kvQb TIL that Walt Disney's 1928 animated short "Steamboat Willie" featuring Mickey Mouse is now part of the public domain after having finished its 95th year as a copyrighted work. This means that this specific version of MM is freely available to use in new creative works across all artistic mediums.
GAwyj TIL The confederacy had its own constitution, but besides changes regarding slavery and states rights and the occasional change in phrasing, it was a word for word copy of the US constitution
pYv7p TIL That Star Trek takes place almost COMPLETELY within the Milky Way Galaxy. ONLY the Milky Way.
QQLM TIL two million citizens of Lithuania, Estonia and Latvia held hands in 1989, forming a 600 km (370 mi) human chain to protest against Soviet occupation. The Soviet Union threatened “catastrophic consequences”, but ended up peacefully giving the states their freedom.
E1rN0 TIL The More Gender Equality, the Fewer Women in STEM. A new study explores a strange paradox: In countries that empower women, they are less likely to choose math and science professions.