Giants of Science For thirty years, the whole last half of his life, Leonardo da Vinci was obsessed with unlocking the secrets of nature. His notebooks are the mind-boggling evidence of a fifteenth-century scientist standing at the edge of the modern world, basing his ideas on observation and experimentation. Scrupulously researched, juicily anecdotal, this book will change children’s ideas of who Leonardo was and what it means to be a scientist. ©2005 Award-winning biographer Kathleen Krull will focus on five other "giants of science"— Isaac Newton, Charles Darwin, Marie Curie, Sigmund Freud, and Albert Einstein. Each book presents a compelling portrait of an individual as well as a picture of the world at a particular time and place.

Giants of Science All his life, Charles Darwin hated controversy. Yet he takes his place among the Giants of Science for what remains an immensely controversial subject: the theory of evolution. Darwin began piecing together his explanation for how all living things change or adapt during his five-year voyage on HMS Beagle. But it took him twenty years to go public, for fear of the backlash his theory would cause. Once again, Kathleen Krull delivers a witty and astute picture of one of history's greatest scientists. ©2010Voya’s Nonfiction Honor List 2010