Kathleen Krull

A biography of Cesar Chavez, from age ten when he and his family lived happily on their Arizona ranch, to age thirty-eight when he led a peaceful protest against California migrant workers' miserable working conditions.

This biography profiles the life and times of German-born theoretical physicist Albert Einstein, whose contributions to the field earned him a Nobel Prize.

Isaac Newton was not only briiliant, but secretive, vindictive and obsessive. Here is a portrait of the man, contradictions and all, than places him against the backdrop of seventeenth-century England, a time of plague, the Great Fire of London, and two revolutions.

Traces the life and work of the British biologist made famous by his controversial theory of natural selection.

This book explores the world of Sigmund Freud, who, making it into the author's highly popular series due to his creation of a brand-new branch of medicine called psychoanalysis, introduced the world to such controversial theories as Oedipal complexes, the id, and the ego.

Most people know about President FDR, but do you know the woman who created his groundbreaking New Deal? As a young girl, Frances Perkins was very shy and quiet. But her grandmother encouraged Frances to always challenge herself. When somebody opens a door to you, go forward. And so she did. Frances realized she had to make her voice heard, even when speaking made her uncomfortable, in order to fight injustice and build programs to protect people...

Young Neil deGrasse Tyson was starstruck when he first visited the sky theater at the Hayden Planetarium in New York City. He couldn't believe the crowded, glittering night sky at the planetarium was real-until a visit to the country years later revealed the impossible. That discovery was like rocket fuel for Neil's passion about space. His quest for knowledge took him from the roof of his apartment building to a science expedition in northwest Africa,...

Young Neil deGrasse Tyson was starstruck when he first visited the sky theater at the Hayden Planetarium in New York City. He couldn't believe the crowded, glittering night sky at the planetarium was real-until a visit to the country years later revealed the impossible. That discovery was like rocket fuel for Neil's passion about space. His quest for knowledge took him from the roof of his apartment building to a science expedition in northwest Africa,...