The deepest point on the Earth's surface is in the Pacific Ocean located in the Marianas Trench. This point is called the "Challenger Deep" and is 35,818 feet deep.

Play-Doh was introduced in 1956 by Hasbro Inc. The only color availabe was an off white, and it came in one size which a one and a half pound can.

There are more than 2,400 flea species in the world.

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