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TIL: A blue whale's heart beats only 8 to 10 times per minute and circulates 5300 litres or 9326 pints of blood around the whale's body

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via reddit.com

gr9y4 TIL about George de Hebesy who dissolved the gold Nobel Prizes of German physicists in aqua regia to prevent the Nazis from taking them. After the war, he found the solution undisturbed and reconstituted the gold. The Nobel Foundation then recast the medals and presented them back to the winners.
W7Ob8 TIL that cats love eating (human) earwax. Apparently, the proteins in it smell delicious to them.
P1MXL TIL Tyrannosaurus rex and Brachiosaurus, both depicted in Jurrasic Park movie, existed further apart from each other in time, around 90 million years, than humans do to T. Rex, approx. 65 million years.
VMgBB TIL Ann Wilson of Heart wrote the song Barracuda after her recording company created a rumor that her sister and her were having an incestuous relationship for publicity. Following a concert, a fan asked how her “lover” was. Enraged, she went directly to her hotel room and began writing the lyrics.
b9WM9 TIL Gayla Peevey, the little girl who sang, "I Want a Hippopotamus for Christmas," is still alive, and was only ten years old when she recorded the song in 1953.