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273

TIL That we are paid to give plasma but not blood, because people will lie about communicable diseases when paid for blood.

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1mDr TIL The term “rare earth” as in “rare Earth magnets” can be misleading as these metals are not particularly rare or precious. They are about as abundant as tin or lead.
R7Yk1 TIL A study found that there is a robust relationship between the breadth of foreign travel experiences and generalized trust.
x6NL7 TIL about Earthquake Lights, phenomenon where before, during, or after exceptionally powerful earthquakes, lights can appear in the sky
m11BP TIL that until 1986 the tennis balls used at Wimbledon were white. They were changed to yellow to be more visible on TV.
pYnrQ TIL Male snakes have a double-penis and females have a pair of clitorises. Due to anatomic location they are not involved in the reproduction process but hold tactile sensitive nerve endings. According to Australian scientists this implies snakes might receive stimulation and pleasure during mating.