Martina leads UN Environment's work on cities, coordinating the UN Environment wide offer to support cities and promote multi-level policy integration, and is in charge of the cooperation with other UN agencies and partners in the sustainable urban development space. Under her responsibility is also the work on buildings, with the Global Alliance for Buildings and Construction, food systems, and the contributions to the respective programmes under the 10 Year Framework of Programmes. Martina has worked for UN Environment since 1999 in different substantive and management functions. Her areas of expertise include sustainable energy, transport, buildings, climate change, air quality and sustainable consumption and production.