Indian born Professor Siddhartha Mukherjee speaks as he attends the first day of the Jaipur Literature Festival in Jaipur, on January 21, 2011. South Asia’s largest book festival kicked off on January 21, 2011 in India’s western desert state of Rajasthan, drawing many renowned international writers, critics and thousands of literary fans. AFP PHOTO / Sam PANTHAKY (Photo credit should read SAM PANTHAKY/AFP/Getty Images)