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TIL Citric acid, which is widely used in the food and beverage industry is exclusively produced by fermentation with filamentous fungus Aspergillus niger.

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v1wkB Today I learned that cats don’t perceive music the way we do. Kitties have different acoustic, vocal, and heartbeat ranges than us. And there's music made specifically for them such as Cozmo’s Air composed by a team of researchers at the University of Wisconsin.
XEM4D TIL Walt Disney himself voiced Mickey Mouse from his premiere in 1928 until 1946 when Walt became too busy to do it.
MePm0 TIL Women with Neandertal gene give birth to more children! One in three women in Europe inherited the receptor for progesterone from Neandertals – a gene variant associated with increased fertility, fewer bleedings during early pregnancy and fewer miscarriages.
Z8m4Y TIL about the Battle of Saragarhi, in which 21 Sikh soldiers of the 36th Sikh Regiment were stationed at an army post and were attacked by 10,000 to 12,000 Afghans. The Sikhs chose to fight to the death, in what is considered by some military historians as one of history's greatest last stands.
W7v6d TIL that Jean-Jacques Rousseau developed a boustrophedon musical notation. This required the writer to write the second staff from right to left, then the one after from left to right, etc. Thus the musician avoided jumping a staff while reading.