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TIL there’s a sound in Gustav Mahler’s 6th symphony that requires a giant hammer(or similar equipment) to make — now called the ‘Mahler hammer’.

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gMwob TIL about microbursts. A microburst is created by a column of sinking air that after hitting ground level, spreads out in all directions and is capable of producing damaging straight-line winds of over 240 km/h (150 mph)
R75aj TIL instead of providing famine relief, most of Live Aid's money went to funding an Ethiopian Dictator
MebRV TIL that despite having a weight of 1100 pounds, an adult colossal squid only needs to consume about 30 grams of prey per day, due to an extremely slow metabolism.
epZmg TIL since its invention in 1959, the MOSFET transistor has become the most produced artificial object in history with over 13 sextillion manufactured
M7R4K TIL that in 2005 The Journal of Clinical Investigation published an article titled "Tom Cruise is dangerous and irresponsible" because of "reckless" comments made by Cruise where he stated that psychiatry is a "quack" field and postpartum depression is pharmacologically untreatable.