In this second episode of TARGET: Zero Hunger we delve in to the $50-billion world of food fraud and the science used to expose it -- to discover that our food has finger prints. Our journey into the authenticity of food takes us from a small cheese shop in Italy to Austria where we explore how FAO and the International Atomic Energy Agency collaborate on nuclear technology for food and agriculture. We'll also hear stories about the rice fields of India and Pakistan. Along the way we talk to producers, scientists and food safety experts about the importance of true food and the role of isotopes as the tiniest of allies in the global fight against fraud. Photo: ©FAO/Alessia Pierdomenica