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Energy as one of the most important factors of production, today has a great contribution to the economic growth and development of countries and has played the greatest role in the development of recent human civilization. This role, from transportation to food production and the provision of medical and health services, is becoming more prominent day by day. In order to continue the supply of energy in order to continue to use it, a lot of investment must be made. That is why energy security has been so much the focus of energy policymakers around the world. In this book, we first address the issue of defining and examining the importance of energy security then we talk about fossil fuels. In the following, we will discuss the effects of fossil fuels on the Earth's climate and biosphere. The issue of international agreements, including the Paris Agreement, will also be considered, as well as providing solutions to fossil fuel damage by introducing renewable energy sources, which will be one of the chapters of this book. Finally, we will examine the disadvantages and disadvantages of renewable energy to realize that these energies are not perfect in themselves! Instead of fearing, or sitting and calculating, that there are a few years left until the end of the life of oil reserves, the world needs a policy that thinks about the available alternatives. Much more and better alternatives to the fossil fuels that have driven the world and industry for years. Renewable energy sources are another proposition facing human societies. A way to overcome the energy crisis and the time bomb that seems to be tuned to announce the end of energy at any moment. In fact, we should listen to the proposal of the Saudi Minister of Energy in the 1970s, who said: "The Stone Age did not end because the stone ran out. The age of oil must end much sooner than the end of oil."

Backgrounds and Aims: Using Geographical Information System (GIS) can decreases the burden of road traffic injuries effectively by identification of hot spot to modification in hazardous areas. The aim of the study was determining geographical distribution of human risk factors associated with road traffic injuries by using Geographical Information System (GIS) in Iran. Materials and Methods: The national database of road traffic injuries registered by the Iranian traffic Police (Rahvar NAJA) was used. The human risk factors were investigated by recognition of the hazardous points and geographical distribution of associated risk factors. The Hot Spot Analysis and Map clustering approaches were employed to meet the objectives. Results: The mean age of injured subjects was 34 years and the most affected age group was 20-39 years. Death and injury occurrence within out of cities ways were 0.3 % and 28% respectively. Geographical distribution of risk factors also showed that roads of Northern provinces i.e. (Gilaan and Mazandaran) were the hazardous rising as well as Qazvin to Rasht and Qom to Tehran roads. Sistan and Balochestan Provinces and Tehran had the highest (4.8%) and the lowest (0.1%) rates of road traffic injuries leading to death in the country. Conclusions: Northern provinces and its leading axes by hazardous rising and Sistan and Balochestan province with fatal injuries need to identify the cause of injuries' and, if necessary, more tighten regulations and more controls by the traffic police must be applied. REFERENCESPeden M, Scurfield R, Sleet D, Mohan D Hyder A A, Jarawan E . (2004).World report on road traffic injury prevention: World Health Organization Geneva. 2004.Kopits E, Cropper M. Traffic fatalities and economic growth. Accid Anal Prev 2005;37(1): 169-78.Channa R, Jaffrani H A, Khan A J, Hasan T, Razzak J A. 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