Dr. Nuria Castell has a Ph.D. degree in Atmospheric Physics and currently holds a position as senior research scientist at the Norwegian Institute for Air Research (NILU). Nuria has over 20 years of experience in air pollution research with a particular emphasis on air quality monitoring and modelling on urban and regional scales. Her current research focuses on the exploitation of novel monitoring technologies to complement existing monitoring systems in the characterisation and assessment of indoor and outdoor air pollution. She is also chair of the European Citizen Science Association working group on air quality. She is passionate about exploring new ways of using citizen science to both monitor the environment and increase environmental action.