An average ball point pen can write a line 2 miles (3.2 km) long.
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The small intestine of a human is 20 feet long.
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The large intestine of a human is 5 feet long.
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James Knox Polk, the 11th U.S. President, died of chronic diarrhea.
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The significance of the number 21 in a 21-gun salute is derived from adding the digits of 1776.
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The word typewriter can be typed using only the top row of keys.
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Kazakhstan is largest landlocked country in the world.
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Deolpur, India is the only place in the world where wooden polo balls are made.
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The red kangaroo can produce two different types of milk at the same time from adjacent teats to feed both younger and older offspring.
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The Basenji, an African dog, is the only dog that does not bark.