Michał Czepkiewicz: Geographer working at the Faculty of Sociology of Adam Mickiewicz University in Poznan. He deals with the relationships between urban planning, mobility, greenhouse gas emissions and the well-being of urban residents. His work combines qualitative and quantitative methods from geography, geoinformation and sociology. He leads a research project on the mobility of inhabitants of Polish cities and its impacts on climate change. He collaborates with the University of Iceland in Reykjavik, where he studies greenhouse gas emissions related to the lifestyles of urban residents. He cooperates with local governments in Poland in spatial policy, sustainable mobility and social participation.