Nathalie Roebbel is the Unit Head for WHO’s work on Air Quality and Health at the WHO. Prior to this she was a technical officer in the Department of Public Health, Environmental, and Social Determinants of Health at WHO in Geneva leading the department's work on housing and health. One of her main areas of work was the development of WHO Housing and Health Guidelines and WHO’s efforts to address slum upgrading through housing policies and other social policies and interventions. Before joining WHO HQ, she worked as a technical officer at the WHO Regional Office for Europe, in Bonn and Copenhagen, where she was responsible for environmental health performance reviews and involved in several housing and health related projects. Ms Roebbel holds a Ph.D. from the Rheinische-Friedrich-Wilhelms University in Bonn, Germany.