In this e-book, you will learn about Lazzaro Spallanzani, who helped disprove spontaneous generation; Tycho Brahe, a careful observer of the heaven; Johannes Kepler, who formulated three laws of planetary motion; Martin Klaproth, who discovered several chemical elements; Amedeo Avogadro, who discovered what is now known as Avogadro’s Law; Louis Agassiz, the Ice Age Scientis; Henry Moseley, whose productive career was cut short by death; Ignaz Semmelweis, the savior of mothers; Elie Metchnikoff, who discovered a major mechanism of body defense; and Simon Marius, a rival of Galileo.