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TIL that introverts tend to have larger, thicker gray matter in their prefrontal cortex — a region of the brain that is linked to abstract thought and decision-making — while extroverts have less gray matter (2012 study by Randy Buckner of Harvard University)

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51nR TIL That the remaining relatives of Adolf Hitler have decided not to marry or have children to end the blood line of Adolf Hitler.
1o4X TIL The earliest form of RAM stored data as sound waves. Bits would be ‘thumped’ into a tube filled with mercury, then read by sensor on the other end. The computer was free to do other things during the relative eternity it took the bits moving at the speed of sound rather than the speed of light.
1ab9r TIL: The character Aunt Jemima, known for pancakes and syrup today, is based on a song that was sung in minstrel shows and commonly performed by men in drag and blackface
5V9DR TIL that silver fulminate is a high explosive that’s so sensitive, it can be detonated by a falling feather. Larger quantities of it self-detonate under its own weight. Its main use is in children’s novelties like bang snaps.
nRZo TIL: Approximately 25% of adults in the U.S. have some form of mental illness or substance use disorder, and these adults consume almost 40% of all cigarettes smoked by adults