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TIL a new program has started using UAV’s to combat elephant and rhino poaching in Africa. Small, battery-powered UAV’s are much more mobile than park rangers, and virtually silent, making them ideal for spotting poachers who think they’re alone in the bush.

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0wd91 TIL that England and Portugal have been allies since 1386, the longest unbroken treaty in effect today
69NdQ TIL: the sports rating system ELO, most seen in competitive chess, isn't an acronym but the last name of it's inventor, the Hungarian Arpad Elo (1903-1992). He came up with a more fair rating based on the then current one. Other sports use it well, often with minor tweaks and naming.
P1aMO TIL Contrary to common belief, brain dominance theory is false. We can't be more right-brained or left-brained. While each side controls different aspects of thought & function, we use both sides equally to process our 50,000 thoughts per day (average number per day).
epkvL TIL in 2004 the average TV screen size was 25.4" and the average selling price was $552, whereas, in 2019 the average screen size had increased to 47" while the average selling price had dropped to $336.
WwdA TIL in 1795, as Joseph Haydn conducted the premiere of his 102nd symphony, the audience pressed forward out of their seats to get closer to the famous composer. Moments later, a chandelier crashed to the floor where the seats had emptied, killing no one and giving this piece the name “The Miracle”.