Panel member Serge Salat, co-author of the Panel's Weight of Cities report, will give the keynote address at the Urban Sustainability International Congress in Vila Velha, Brazil. Dr Salat is President of Urban Morphology and Complex Systems Institute in France, and will speak within the context of the 4th URBENERE (Energetically Efficient Urban Communities) Day and 2nd CIRES  (Inclusive, Resilient, Efficient and Sustainable Cities) Day.