It was once said that only twelve people in the world could understand Einstein's Theory of Relativity. That unfortunate situation began to change when Einstein published several of the papers and speeches contained in this book which explain the...
Carl Sagan, writer and scientist, returns from the frontier to tell us about how the world works. In his delightfully down-to-earth style, he explores and explains a mind-boggling future of intelligent robots, extraterrestrial life and its...