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TIL Chinese youth are starting to become sexually active. A study in 2013 showed that about 24% of undergraduates had experienced premarital sexual intercourse. This was an approximately 4-fold increase than reported in 2002

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x6j6D TIL that AIDS was initially called GRID - Gay Related Immune Deficiency. It was changed to Acquired Immune Deficiency Syndrome once it was clear that the disease was not confined to the gay community.
oBdn8 TIL California's vehicle emission laws are stricter than those of the EPA. Cars made for sale in the US are made with those standards in mind so they can be sold all over. Often, the EPA adopts California's standards a few years after the state institutes them.
N77mQ TIL Inbreeding is a humongous problem in the middle east. 70% of marriages in Pakistan are between first cousins, and roughly 50% of people in the 'Arab world' are 'inbred'.
8adeb TIL that China, even though is almost as wide as the continental United States, only shares 1 time zone due to the CP desire for unified control.
7Bwr TIL Euchre is responsible for introducing the joker into the modern deck of cards