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TIL that radio waves aren’t just really high-pitched sound waves, they’re actually big light waves.

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xVApo TIL that renowned cellist Yo-Yo Ma made his stateside debut at "The American Pageant of the Arts" at the age of 7. In attendance were sitting President John F Kennedy and former President Dwight D Eisenhower.
N7Em8 TIL of "Dr. Death". Jack Kevorkian claimed to have performed physician-assisted suicide of at least 130 people.
xVAx7 TIL that the ratio between your index and ring finger is indicative of prenatal testosterone/estrogen exposure and is also correlated with various traits related to health, behavior, and even sexuality later in life.
v168j TIL Freddie Mercury preferred being with his cats than other people, and often called who was taking care of them to "talk" to his cats when he was away.
Ze5D TIL: Jason Lewis circumnavigated the Earth without using motors or sails. He walked, cycled, & inline skated 5 continents. He kayaked, swam, rowed, & pedalled a boat across the rivers, seas, and oceans. It took him 13 years to complete the 46,505-mile journey.