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TIL The human brain's 86 billion neurons are connected by approximately 850,000 km (530,000 miles) of axons and dendrites. To put things into perspective, the distance between Earth and Moon is only 384,000 km (240,000 miles)

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xVnbw TIL of a Jain festival “Kshamavani” (Forgiveness Day) wherein the followers ask for forgiveness, of all your dear ones, everyone whom they may have wronged, knowingly or unknowingly.
E1Ayd TIL that copyright didn’t exist in 15th century which led to an increase in copied plays. To counter this, actors got their lines only once the play was in progress – often in the form of cue acting when someone backstage whispered it to them.
VBEZB TIL that "diesel therapy" is a form of punishment used by the US prison system. Inmates are taken on excessively long journeys of days or weeks between prisons, shackled without water or AC in hot buses with poor sanitation.
4XWa TIL that metallic smell from old pennies and keys is actually just the smell of sweat from our bodies reacting with the metal, not the metal itself.
0wdAR Possibly. The trees-down (or “arboreal”) hypothesis has been around for many years, says evolutionary biologist Richard O. Prum of Yale University. Researchers guessed that the scales of tree-dwelling Triassic reptiles elongated into feathers, which helped them leap away from predators. Once the proto-birds could glide, they were en route to avian flight. “It was like one big, crazy hairball of ideas all stuck together,” Prum says.