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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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ANPPx TIL Trains have tanks of sand with tubes that shoot sand under each wheel to create friction so the train accelerates more efficiently
a8rxM TIL that actor Mark Lindsay Chapman, lost the part of John Lennon in a 1985 biopic because Yoko Ono thought him having the same name as Lennon's killer was "bad karma". Linsday would eventually play Lennon in the 2007 movie Chapter 27... a movie that mostly focused on his killer, Mark David Chapman
Xb7k TIL: One of the oldest and most effective asthma meds, Albuterol, was $15 per inhaler in 2000, now after it was re-patented it is $100.
OojW4 TIL a German stranger in a street interview predicted Germany's 7-1 win over Brazil in 2014
Rejl TIL The Big Bang Theory was actually first theorized by a Catholic priest.