As the overwhelming need to satisfy human desires grew, people developed better ways to travel, in particular flying.   This on-line review will point you to specific sites where you can begin to explore the topic of flight in depth -- from discovering how things fly to visiting the future with NASA projects.

Aero Design Team Online
http://quest.arc.nasa.gov/aero/

Meet Ken Schrock, join a collaborative project, or even win a poster contest as you learn from NASA who is designing the planes of the future, and learn all about how airplanes fly.

Learn what makes an aircraft fly, a spacecraft stay in orbit, or a balloon float in the air from the exhibition at the National Air and Space Museum.

A great resource of principles of aeronautics, lesson plans, scientists' and engineers' guide, curriculum bridges, and activities to how things fly, myths about flying, and the history of flight.

A slide show of World War II planes.