› added 4 years ago

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TIL of the Mean World syndrome, a cognitive bias where people perceive the world to be more dangerous than it actually is due to heavy exposure to violence-related content on mass media.

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xVA0 TIL the nuclear family started when Homo Ergasters’ pelvises narrowed for upright walking; this narrowed the birth canal which caused babies to be born with less developed (smaller) brains which caused mothers to lean on their partners for support since they’re busy caring for the helpless newborn
oBdn8 TIL California's vehicle emission laws are stricter than those of the EPA. Cars made for sale in the US are made with those standards in mind so they can be sold all over. Often, the EPA adopts California's standards a few years after the state institutes them.
VMbvp TIL There is a gene mutation which gives almost complete protection against HIV. 1% of Caucasians have the mutation, but among the Ashkenazi Jews of Eastern Europe, the rate is as high as 15%.
6E5yY TIL that Dogs’ facial expressions are not just random face movements. These facial expressions are actually tools to communicate with their owners. According to the study, the researchers inched toward the conclusion that dogs are smiling at us.
VM15p TIL Homer Simpson and many other characters in the works of Matt Groening have the middle initial J as an homage to Rocky and Bullwinkle creator Jay Ward, who gave many of his own characters the same middle initial.