› added 1 week ago

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TIL that although the ancestor of all big cats split into the family of Felidae nearly 7 Mya, the skulls of lions and tigers are so similar they are difficult to be told apart by the untrained eye except by specific characteristics like skull sutures placement, nasal bone size, and canine size.

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AD1vn TIL that rigor mortis in the dartos muscle in the scrotum may lead to post mortem ejaculation of semen and may get wrongly interpreted to sexual activity just before death.
XEvXP TIL 30% of humans are infected by the parasite toxoplasmosis. Which makes people more likely to engage in unconventional sexual practices. For example, bondage.
BgJLb TIL Paektu mountain on the border of North Korea and China still holds near mystical reverence in the former communist country and is quoted as the birth place of Kim Jong Il while also being the source of 3 rivers including two that for the North Korean/Chinese border.
wKd1 TIL there is an 80 Million year old species made up entirely of females. “Bdelloid rotifers are to microscopic life as Rogue is to the X-Men.” They steal DNA from other organisms, mutating their own genes to absorb new traits. They can also survive 9 yrs of Desiccation.
R7DDw TIL when Charlie Sheen came out as HIV positive, it led to a 95 percent increase in over the counter HIV home testing kits and 2.75 million searches on the topic, dubbed "The Charlie Sheen Effect." Some said that Sheen did more for awareness of HIV than most UN events.