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TIL a common variety of slime mold (which is comprised of many single cell organisms) is capable of solving mazes and having preferences. To accomplish this, the slime mold is believed to use a form of democratic-ranked-choice voting

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p8bMG TIL "The Hole in the wall" project put computers inside walls in poor villages/slums in India with no English teachers/guide. In a few months, the 6 to 13 year old children taught themselves English using the computer and told the researchers they needed a faster processor and better mouse.
0wB0R TIL that Alaska has the highest rate of serial killings at just over 7 per 100,000 people, while California has the highest number of serial killings overall, totaling 1,628 people.
aZKL TIL that humans can generally detect their parents, children, and siblings (but not spouses, half-siblings, and stepchildren/step-parents) by smell, and females prefer sexual partners with a different smell than their own. Scientists believe this is an evolved defense against incest.
grLl8 TIL about the Reverse Mandela Effect - A phenomenon where an event or detail suddenly appears in the public consciousness that would have otherwise been too significant to forget. A popular example is the supposed assassination of MLK Jr.'s mother: Alberta Williams King.
x69Pw TIL that the mirrors required for the production of advanced microchips are so flat that if scaled to the size of Germany the highest point will only be a tenth of a millimeter. Because of that the German technologies company "Zeiss" is the only one in the world able to produce these mirrors.