Jonathan Watts on the way to Rio+20

With a decade of experience as Asia Environment Correspondent for the Guardian, Jonathan Watts is in Rio+20 as freshly appointed Latin America Correspondent. An influential author, with his latest book "When a Billion Chinese Jump" exploring the leadership role of emerging new global powers like China. In this interview, Watts reflects on expectations from the Rio+20 process, and provides interesting insights on the necessary transition to sustainability.