Walter Isaacson tells big discovery stories of science founded on personal friendships with all the people who drove them. He is a maestro. All his books involving contemporaries have a sharp, journalistic feel. The Code Breaker is no exception. Isaacson explores the biggest scientific story of our time; how humankind, after 3.7 billion years of creeping evolution, has in the twinkling of an eye first understood and then developed a mechanism to manipulate genetics. The book’s subtitle – Jennifer Doudna, Gene Editing, and the Future of the Human Race is no exaggerated puff.