Los tipos de personalidad

The life and times of Stephen Foster

Edwin Hubble and the theory of the expanding universe

Cesar Chavez

Michael Faraday and the Discovery of Electromagnetism (Uncharted, Unexplored, and Unexplained) (Uncharted, Unexplored, and Unexplained)

The Life and Times of Archimedes (Biography from Ancient Civilizations)

The Life and Times of Socrates (Biography from Ancient Civilizations)

Samuel Morse and the Electric Telegraph (Uncharted, Unexplored, and Unexplained) (Uncharted, Unexplored, and Unexplained)

Dmitri Mendeleyev and the Periodic Table (Uncharted, Unexplored, and Unexplained)

Guglielmo Marconi and Radio Waves (Uncharted, Unexplored, and Unexplained) (Uncharted, Unexplored, and Unexplained)

The Life and Times of Marco Polo (Biography from Ancient Civilizations)