Dirty water is transformed with a series of innovations - Chicago builds America's first sewer system, and Jersey Cit...

With no natural light, submarines re-invent the workday. Frustrated with hundreds of local time zones, a railroad cle...

The invention of the mirror gives rise to the Renaissamce; glass lenses reveal worlds within worlds worlds; glass is ...

The pioneers of light; Edison's light bulb; a French scientist accidentally discovers a neon light.

Ice delivery becomes big business, the father of frozen foods, Clarence Birdseye, and his vision for the future, and ...

30,000 year old traces of a desire to record sound are located in caves, how radio influenced the civil rights moveme...