Prince Abdulaziz bin Ayaf, Mayor of Riyadh Region is participating in " EnviroCities 2008 International Conference," which began its activities today in Dubai. The conference is jointly organized by the Environmental Center for Arab Towns (ECAT) and the Harvard School of Public Health. The theme of this year' conference will be 'Sources and Health Effects of Air Pollution: Knowledge to Practice'. Over 20 renowned researchers from around the world are invited to bring together the current state of science for air pollution sources and their health impacts on the community. The Environmental Center for Arab Towns (ECAT) is a scientific research institute which deals with environmental issues concerning Arab city's natural resources and sustainable development. --MORE