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TIL African elephants can exchange information by emitting low-frequency sounds that travel dozens of miles under the ground on the savanna. The sound waves come from the animals' huge vocal cords, and distant elephants “hear” the signals with their highly sensitive feet.

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QJxAL TIL "Jazz on bones" or "Ribs" were bootleg vinyl recordings made from old x-rays with holes burned in the middle from cigarettes. In the 50's and 60's they were a black market method for smuggling banned music into the Soviet Union such as The Beatles, The Rolling Stones, and Elvis.
JYORV TIL Michael Jordan wanted a sponsorship deal with Adidas but they thought he was too short. He signed with Nike instead and today his brand makes about $3 billion a year in sales, with $100 million going to Jordan.
e0YR6 TIL that while bulking up on raw salmon, grizzly bears often become infected by tapeworms and expel them before hibernation, causing them to walk around with very long “tapeworms tails” coming out of their butts.
DQNjg TIL of the interstitium, a new organ Western scientists discovered in 2018. The honeycombed network throughout the body, known to Chinese medicine for 2500 years, may help explain how acupuncture works and cancer spreads.
9JRG TIL men and women see colors differently. In general, women are better at discriminating among colors while men excel at tracking fast-moving objects and discerning detail from a distance.