Gases that build up in your large intestine cause flatulence. It usually takes about 30 to 45 minutes for these gases to pass through your system.

The Olympic flag's colors are always red, black, blue, green and yellow rings on a field of white. This is because at least one of those colors appears on the flag of every nation on the planet.

Pennsylvania is misspelled on the Liberty Bell, because that is how they spelled it in the 18th century.

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