Billions of years ago the universe was too hot for life to exist. Countless aeons from now, it will become so cold and empty that life, no matter how ingenious, will perish.
Lawrence M. Krauss is Foundation Professor in the School of Earth and Space Exploration and the physics department and inaugural director of the Origins Project at Arizona State University. Author of several popular books and commentaries for national publications, radio and TV, he also lectures widely on science and public policy. Krauss has the unique distinction of having received the highest awards from all three U.S. physics societies. In his spare time, he has performed The Planets with the Cleveland Orchestra and served as a Sundance Film Festival judge. He has written many articles and columns for Scientific American and serves on its board of advisers. Follow Lawrence M. Krauss on Twitter Credit: Nick Higgins