Michaël Zumstein works on conflicts in Africa and the relations between Africa and the West, with a special focus on human rights, ecology, and the consequences of the global economy. His work has exposed abusive situations endured by miners of the coltan mines (the Democratic Republic of the Congo), and the pollution caused by mining for the minerals used in manufacturing computer technology. He was hired by Le Monde in 2007 to cover the presidential campaign, and follows French news for several newspapers at present. He also holds photographic workshops in Africa for World Press Photo.