Dogs have formed such a strong bond as pets, workers and companions to humans that they have earned the nickname "man's best friend".

A flea can jump 150 times its size. That is the same as a person able to jump up 1,000 feet in the air.

In 1982, Larry Walters tied 24 weather balloons to his lawn chair in Los Angeles and climbed to an altitude of 16,000 feet.

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