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TIL a study published British Journal of Psychology concluded that those with higher intelligence don’t require large social circles to be happy

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epaB6 TIL that Brazil nuts have an elevated amount of selenium (68-91 mcg per nut), and having too many of them can cause the body selenium to increase above the acceptable limit. Extremely high levels of Brazil nuts can cause a condition known as selenosis, which is even characterized by heart attacks.
Z80y4 TIL Cobra Commander was a used car salesman in the GI JOE comics. His brother was killed in a drunk driving accident, he became embittered and started a pyramid scheme called COBRA.
QJmja Today I learned the Himba people of Namibia sees colours way differently than others in the western world. They can easily see different variations of green, which we can't, but overall they only have 5 colour categories where the western world has eleven.
v1nLL TIL the Bubonic Plague is still around. It affects about 7 people a year in the US, and small rodents like prairie dogs are fed vaccine treats to help their populations and reduce spread.
N7eXJ TIL Down syndrome is practically non-existent in Iceland. Since introducing the screening tests back in the early 2000s, nearly 100% of women whose fetus tested positive ended up terminating the pregnancy. It has resulted in Iceland having one of the lowest rates of Down syndrome in the world.