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TIL that Hugh Hefner doesn’t own the Playboy Mansion. Playboy owns the house and Hefner must pay an annual fee to cover rent and other expenses like food and parties. Including the room and board for Hefner’s many live in girlfriends.

W7E4B TIL about the "52-hertz whale". A Whale of unknown species, that uses the unique frequence of 52 hertz for his calls, while other whales close to his migration pattern use frequences of 10-39 hertz. Therefore he never got an answer to his call and is considered to be the loneliest whale in the world
M7Gk7 TIL: PBS interviewed a legendary spy power couple who took turns as the CIA's Chief of Disguise. They invented many works now at the International Spy Museum including "Jack in the Box" a pop up dummy, disguises in painter's case, hidden cameras, and underwear that makes you appear pregnant.
69bjY TIL that a bird called the bar-tailed godwit is capable of flying for up to 11 days without a single break or meal. Apparently, the bird makes a 7,000 mile trip annually from the coast of Alaska to New Zealand
MeavV TIL the Grateful Dead briefly toured with a PA system called the Wall Of Sound that consisted of six hundred and four speakers, channelling twenty-six thousand watts of power. It has been called “the greatest vessel for the amplification of sound in history”.
eook TIL that Curiosity Rover may have already stumbled upon signs of life on Mars but is too far past the site to go back and check