books.google.co.uk - Are We Alone in the Universe? In this provocative and far-reaching book, internationally acclaimed physicist and writer Paul Davies confronts one of science's great outstanding mysteries -- the origin of life. Three and a half billion years ago, Mars resembled earth. It was warm and wet and could...http://books.google.co.uk/books/about/The_Fifth_Miracle.html?id=m6to8DubfFwC&q=chapter&utm_source=gb-gplus-shareThe Fifth Miracle
