The Life of the Solar Pioneer Karl Wolfgang B�er is the most comprehensive Autobiography of a world-renowned Scientist and Engineer who has been at the forefront of the development of solar energy throughout his life. He has been instrumental to show the direction solar energy conversion must go to become the key element of future energy production worldwide. With the Solar One House of the University of Delaware, he has given the direction the solar houses of the future will progress to generate electric power and heat in a systems house to provides load leveling for power utilities, and has now published the theory of the new solar cell that does no longer need a pn-junction to separate the electrons from the holes that sunlight creates, but a thin layer of attached cadmium sulfide that provides the separation efficiently and inexpensively.