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."

Chameleon is derived from the Greek, meaning "little lion."

The largest volcano known is on Mars: Olympus Mons, 370 miles wide and 79,000 feet high, is almost three times higher than Mount Everest.

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