Muhammad Ali redefined heavyweight boxing—he broke every rule about how big men should fight. Across 21 years as a professional, Ali won 56 fights (37 by knockout) and lost only 5. Ali turned fights ...

(CNN) -- For nearly 40 years, some of America's most gifted writers have been drawn to examine a single subject. Joyce Carol Oates, Norman Mailer, Hunter S. Thompson, Tom Wolfe, Gay Talese and many ...