Describes the postal services and explains how a letter placed in your mailbox can reach almost anyone, anywhere in the world.
Describes how the natural gas that is used to cook and heat your home is discovered and transported into your home.
Describes how the telephone works. Young readers will gain an understanding on how dialing several numbers on a phone enables them to communicate with virtually anyone on earth.
Describes how Television programs are developed and transmitted across the airwaves and into homes, schools, and offices.
Describes how water is transported, treated and stored from its source into homes, schools, and offices.
Describes how electricity is produced and transported from the power plant into homes and offices.
Describes how the internet works, from how content is developed to how sites from around the world are accessible from your home computer.