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TIL that in Spearfish, South Dakota on January 22, 1943 at 7:30 am, it was -4 °F, then two minutes later, the temperature rose up to 45 °F. This is the fastest temperature change ever.

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kJdJg TIL there are no snakes in Iceland. The few spider species present there are not harmful to humans.
5Y0mP TIL In some countries (Czech Republic, Slovakia, and parts of Hungary) there is a traditional Easter Whipping. Men spank women with special handmade whips on Easter Monday. If men arrive at women's houses after 12:00, women throw a bucket of cold water on them.
1aEpV TIL the most cited scientific paper in history, authored by Oliver H. Lowry, described one of the most important biological technique to easily measure the amount of protein in a solution based on their interaction with copper ions. It is now known as the Lowry's test.
G7a1 TIL that there is a community college that is isolated in the middle of a California Valley at which students live on campus but pay almost nothing, and are instead required to work at least 20 hours a week in jobs such as cook, butcher, or “cowboy”.
grPAb TIL for infants, not being breastfed is associated with an increased incidence of infectious morbidity, gastroenteritis, and pneumonia, as well as elevated risks of childhood obesity, type 1 and type 2 diabetes, leukemia, and sudden infant death syndrome (SIDS).