› added 4 years ago

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TIL that 90% of people (trichromats) see about 1 million colors, but the others, (tetrachromats) have a genetic mutation and therefore see an incredible 100 million colors. This happens more in women, with nearly 12% of women having this fourth color perception channel.

Read more healthline.com

via reddit.com

m1PNx TIL that Willie, a heroic parrot, saved a choking girl by alerting his owner, Megan Howard, who then performed the Heimlich maneuver and rescued her.
L8Nr TIL that watermelon became a stereotype for black people because free black slaves grew and ate it, and it became a symbol of their freedom.
7r5A7 TIL Rick Moranis and Geddy Lee attended Elementary School together.
JYeAB TIL a 75-year Harvard study found close relationships are the key to a person's success. Having someone to lean on keeps brain function high and reduces emotional, and physical, pain. People who feel lonely are more likely to experience health declines earlier in life.
dDa8Z TIL that in 2017, an American high school student collapsed and died after drinking a latte from McDonald's, a large Mountain Dew soda, and a highly caffeinated energy drink in just under two hours