Describes the life and work of the courageous man who changed the way people saw the galaxy, by offering objective evidence that the earth was not the fixed center of the universe.

"Leonardo da Vinci was a famous artist and thinker. He created well-known paintings like the Mona Lisa and The Last Supper, and even had ideas for modern-day inventions like cars and contact lenses. Before he amazed the world with his creative mind, he was a bright kid who loved asking questions. As a teenager, he studied under an expert artist who taught him different ways to create, like painting and sculpting. Explore how Leonardo went from being...

For more than thirty years-half his life-he was obsessively devoted to investigating Everything in the natural world. Nothing escaped his interest-how our eyes see, why the sky is blue, what forces build mountains, how light travels, where water comes from, and-most fascinating of all to Leonardo-the inner workings of the human body. Nothing stopped him. It was illegal to dissect human corpses, so he did autopsies in secret, even devising a clever...