Jean Ziegler (born Hans Ziegler, 19 April 1934) is a Swiss former professor of sociology at the University of Geneva and the Sorbonne, Paris, and former vice-president of the Advisory Committee to the United Nations Human Rights Council. He was previously Member of the Swiss Parliament for the Social Democrats from 1981 to 1999. He has also held several positions with the United Nations, especially as Special Rapporteur on the Right to Food from 2000 to 2008, and as a member of the Advisory Comm ...