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TIL although the actual size of most mammals – including humans – is mostly set from birth, there are many other animals, such as fish, amphibians, lizards, and snakes which are known as "indeterminate growers." They never stop growing.

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G9Bj TIL The SR-71 Blackbird, the fastest plane ever built, would go so fast its outside temperature would reach 572 F (300C). It had to be built with components that could grow as they heated. Because of this, the jet would leak fuel until it got hot.
KOOGJ TIL of the Chewbacca Defense, a common legal term where a defence is built on confusing the jury. The term comes from the South Park version of the O.J. Simpson case.
8mxb TIL that the name “Annie” in the Michael Jackson song Smooth Criminal is based on the name of the mannequin commonly used in CPR training. Trainees are taught to say “Annie, are you OK?” to the dummy in order to check that the patient is conscious and responsive.
RGxl TIL that 7 months after Russia declared war on Germany in 1914, a small band of Georgian warriors from a remote part of Georgia clad in medieval armor rode into the capital of Tiflis and up to the governor’s palace, reporting for military duty, stating: “We hear there’s a war” “Where’s the war”
E1ZrX TIL on it's last flight one SR-71 Blackbird broke four world speed records. The trip from L.A. to D.C. was completed in a cool 64 minutes 20 seconds. The plane landed at the Smithsonian Air and Space Museum and has never flown again.