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TIL that strings and cables moving randomly will spontaneously knot themselves with a probability reaching 100%

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rNAr4 TIL Techniques in astronomy of taking images of the sky are being used by dermatologists to monitor melanoma in high-risk patient who have their full body photographed. A patient’s skin is treated like the background sky in an astronomical image, and any moles are treated as stars
pYMbG TIL about the variability hypothesis, the hypothesis that human males generally display greater variability in traits than human females do. Sex-differences in variability have been observed in many abilities and traits – including physical, psychological and genetic ones.
6by8 TIL in a 1993 episode of Seinfeld, Elaine was dating a guy who shared a named with serial killer Joel Rifkin. She suggested to him that he change his name to O.J. like the football player. The following year O.J. was charged with double murder.
PYnrg TIL that the first thing that was ever bought and sold over the internet was weed. In 1971 or 1972, Stanford students using Arpanet accounts at Stanford's AI Laboratory engaged in a commercial transaction with their counterparts at MIT, and thus the first act of e-commerce was a pot deal.
lKKr TIL that Facebook market makers’ lost at least $100 Million during market debut due to technical glitch delayed by 30 minutes