Ed Cox from San Francisco invented the pot scrubbing S.O.S. pads in 1917. His wife came up with the name, which stands for "Save Our Saucepans."

The stringy thing that is seen in egg whites is called "chalazae."

The numbers '172' can be found on the back of the U.S. $5 dollar bill in the bushes at the base of the Lincoln Memorial.

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