› added 2 months ago

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TIL: Syphilis originated in the Americas, not Europe, DNA analysis shows

Read more nature.com

via reddit.com

D07e TIL, “No one in the U.S. has died from a black widow spider bite in over 10 years.”
Lk4Nr TIL that there is a rare condition called tetrachromacy, which allows some people, mostly women, to see 100 million different colors, due to having four color receptors. This is far more than the 1 million shades normal people can see with their 3 color receptors.
0dPwR TIL Sex toys were invented 30,000 years ago which means they were invented long before the wheel.
yQPyw TIL of general Thomas Farrell, who demanded to hold the core of the first nuclear bomb in his hands before it was assembled. He later signed the Nagasaki bomb: "To Hirohito, with love and kisses, T. F. Farrell." This is the only love note written on a nuclear bomb used in war.
oBPa7 TIL a study shows that the average male gets bored on shopping trip after just 26 minutes while average woman tires after around two hours