From the Engines of Ingenuity web site. A lengthy page discussing ingenuity and invention as it pertains to steam engine history. Very anecdotal and interesting. Includes biographical information and interesting details about Hero of...

A short discussion about the invention of the submarine and its use by both the Confederates and the Federals in the Civil War. This is a transcript of an accompanying radio broadcast.

Become an engineer, and design a submarine that moves in the water like a real submarine. Try making it sink, float, and hover in the water.