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TIL an infection model explains why spiral galaxies have spiral arms—the deaths of massive stars trigger star formation elsewhere (infection), while their vicinities recover due to the dispersed material; this propagation/recovery and the galaxy's rotation leads to the spiral structures

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5V1dD TIL that Ken Allen aka "Hairy Houdini" escaped from his enclosures à la prison break multiple times; inciting his friends-orangutans to follow his lead. No surveillance, no undercover mission to try to catch him in the act, succeeded to fool Ken.
vLQK TIL Jimmy Kimmel called out a Gawker writer on live television for publishing false reports that he was drunk in public, telling her, “I know you’re an editor. What exactly are you editing from the website?”
xVOn0 TIL It's generally agreed that 10 power is the upper limit of hand-holdable binoculars. The higher the magnification, the greater the wobble. At some point, the wobble negates the increased resolution that magnification provides
PYAQw TIL about The Man in the Moone, a 1638 novel that is considered by some to be one of the first works of science fiction. In it, a Spaniard ends up on the moon after fleeing Spain and harnessing some wild swans who fly him up to it. He then meets the “Lunars”-a people who inhabit the moon.
VMBVQ TIL fingerprints come in 3 types (loops, whorls & arches) and can be sorted by the Henry Classification System.