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TIL Until the 1960′s, the only reliable pregnancy test was to inject a woman’s urine into a female African clawed frog. If the woman was pregnant, the frog would ovulate within 12 hours.

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rjNd TIL that Jews believe God has a 72 letter name that allows the speaker supernatural powers. This name allowed Moses to part the Red Sea
9YMVr TIL that depression can be a symptom of untreated or poorly-managed ADHD. Chronic under-stimulation can lead to depression as "the ADHD nervous system feeds on interest and challenge".
v1w87 TIL that President Martin Van Buren is the first and only US President to speak English as a second language, being Dutch his first. He is also the first president that was born after America's Independence from the United Kingdom.
0ZOj TIL that Gordon Ramsay was doused in petrol and held at gunpoint in Costa Rica for trying to show illegal shark fin trading for a new show.
jXnj TIL Modern Japanese card games like Yu-Gi-Oh! and Pokémon were inspired by a much older card game from the Edo period which featured creatures from Japanese mythology.