Nathalie Jean-Baptiste is a Marie Curie Global Fellow and principal investigator of ACTUS. She is an architect and urban expert on development in low-income countries and infrastructure at risk. Her international experience includes environmental education with a focus on organic waste management in Mexico and Australia as well as vulnerability assessment and adaptation to climate change in Burkina Faso, Ethiopia and Tanzania. She is the Coordinator of the Housing Network of the International Association People-Environment Studies (IAPS) and Lead Coordinating Author of the chapter on Housing and Informal Settlements of the Second Assessment Report on Climate Change and Cities (ARC3-2). She is associated with the Faculty of Architecture and Urbanism at the Bauhaus University in Weimar where she teaches and with the Helmholtz Centre for Environmental Research in Leipzig.