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Six Sigma is a business optimization process developed by Motorola quality engineer Bill Smith. Learn how six sigma works and how it was developed.

Shelbys were the most charismatic Mustangs, and with the 1967 Shelby GT 500, they got muscle car punch. Learn how, and see photos and specifications.

Giving the gift of health is a great way to spend your holiday season. Learn about giving the gift of health in this article at HowStuffWorks.

Take a look at these emotion pictures to see the range of human emotions experienced around the world. Learn about emotions with emotion pictures.

America buys goods at a high rate, so it's no wonder the U.S. is considered "the land of plenty." Read about the daily U.S. consumption for 12 items.

Such famous artworks as 'Mona Lisa' and 'The Scream' have been stolen and returned; some have never been found. Learn about 7 notorious art thefts.

The 1967 and 1968 Imperial were completely restyled due their unibody assembly. Learn more about the changes made to the 1967-1968 Imperial.

The 1969 Dodge Charger Daytona represented Dodge's foray into NASCAR racing. Learn more about the 1969 Dodge Charger Daytona at HowStuffWorks.

Elevator cables pull an elevator up and down the shaft. What would happen if they snapped? Find out what would happen if the elevator cables snapped.

Flamboyant Jimmy Demaret was as much entertainer as golfer. Learn about Jimmy Demaret's golf career and his unique wardrobe choices.

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