Image courtesy Stock.xchng More than a third of Americans believe houses can be haunted.

Image courtesy of Yahoo Yahoo messenger allows friends to chat online.

Image courtesy of the National Science Bowl.

All images courtesy of the Gladstone Library.

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Image courtesy of VivoTechSecurity issues have been a primary concern of using cell phones for payment.

(Image courtesy of the Centers for Disease Control and Prevention.)

All images courtesy of Ryan Richardson.

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