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TIL the US Air Force tested how cats react to being tossed in air in zero gravity. The experiment was documented in a 1947 bioastronautics research video which included slow-mo ejection-seat footage (of men, not cats). They also tested pigeons in zero gravity; some pigeons flew upside down.

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X0woD TIL in his autobiographical account of taking on monopolies, Roosevelt recounted: “...we had come to the stage where for our people what was needed was a real democracy; and of all forms of tyranny the least attractive and the most vulgar is the tyranny of mere wealth, the tyranny of a plutocracy.”
8aZ5a TIL Infrasound waves (with frequencies below 20Hz) lead to distorted vision and the possibility of “ghost” sightings. It can also cause headaches, nausea, night terrors and sleep disorders
69PMX TIL that cough drops have Directions for use. Cough drops are intended to be used once every 2 hours, and dissolved slowly in mouth.
mxaNM TIL On May 20, 1989, Martial Law was declared in Tiananmen Square as its citizens demanded political reform. Just over a month into these protests, soldiers and officers stormed the Square while firing live rounds. The event is commonly referred to as June Fourth Massacre and June Fourth Crackdown.
wLVkY TIL the largest living thing on earth is a humongous fungus