Pollution becomes a serious problem nowadays. Capital Tehran has considered as one of the most polluted cities in the world. A rising incidence of respiratory illnesses is caused by pollutions. Much of Iran’s territory suffers from desertification and deforestation. Industrial and urban wastewater runoff has contaminated rivers and coastal waters and threatened drinking water supplies. Wetlands and bodies of fresh water increasingly are being destroyed as industry. A report by the United Nations Environment Programme ranked Iran at 117th place among 133 countries in terms of environmental indexes
For responding this issue, though Iran has not yet developed a policy of sustainable development, it has taken traffic management, vehicle inspection, general use of electric bicycles and electronic government as a part of solution. Buses and cars will also run on natural gas in the future. It likes the way that Azerbaijan protects its environment as improving ecological situation and also wants to take precedence to its short term economic goals. Iran has signed Environmental Modification, Law of the Sea, Marine Life Conservation but still not ratified. Now, Iran would like to develop economic goals as well as improve its terrible environment and contends that the international rush to develop oil and gas reserves in the Caspian Sea presents that region with a new set of environmental threats.