inventions

Traces the history of notable inventions in aeronautics, including early flight, propelled engines, jets, space travel, and more.

Simple explanations of familiar everyday things, from rainfall and seasons to photography and plumbing.

Samuel Todd shows readers some inventions that make his day easier and better, including Velcro, a Thermos bottle, training wheels, backpacks, and mittens.

A twenty-five-volume, alphabetically-arranged science encyclopedia.

A surprising number of everyday objects had their beginnings in a mistake or a misunderstanding. Such discoveries are inspiring and often funny.

A twenty-six-volume, alphabetically-arranged science encyclopedia.

Examines how machines work and explains various inventions that make our lives easier.

Discusses the accomplishments of men and women who have given us important inventions in such areas as industry and commerce, weapons and warfare, and communication.