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89

TIL Genghis Khan maintained a large empire owing to a excellent postal system, where messages were transmitted at a rate of 300 km per day using a network of horse messengers, with every horse station located 40 km apart, similar to a modern day bicycle sharing system.

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nry7 TIL that workers in the UK can’t be forced to work over 48 hours a week unless they have opted out of this restriction.
OGPnL TIL that orcas have a culture that they pass down to their offspring and they also have variations in vocalizations similar to languages and dialects in humans
mWYR TIL in 1942, sodium fluoride was accidentally added to the scrambled eggs meal at a mental home. At about 1 teaspoon per patient, the sodium fluoride caused violent reactions including vomiting blood and paralysis within 15 minutes, and killed 47 of the 467 patients within one day.
vYAD TIL in a 2010 poll seventy-nine percent of Democrats said they support permitting “gay men and lesbians” to serve openly in the armed forces but only 43 percent, said they were in favor of allowing “homosexuals” to serve openly.
VMyom TIL about Superfecundation and Superfetation. Rare but possible in humans, in Superfecundation the mother produces several eggs at the same time, they are fertilized by different fathers, and she has twins. Superfetation is when a woman ovulates while pregnant and has two pregnancies at once.