Provide a short summary on the main idea and concepts behind your site.
Site: http://who.int/
This site is the offical site of World Health Organization (WHO), a specialized organization of the United Nations. It's mission include to promote coorporation for health among nations and carry out progame to controll disease and improve the quality of human life. The contents of this site include:
About WHO: under this label, people can find their mission, goal, achivement, function, policy, and administration.
What's new: people can find the news happened recently in WHO and news related to world health problems.
Health topics: under this label, we can find the information relative to various of disease such as infectious disease and non-communicable disease.
Information sources: This is an important site where we can find the databases that relative to world population and health. Two important databases under this label are Library and WHOSIS. From the databases we can find such data as Burden of disease and Mortality estimate.
Search engine: this can be used to find the concerned infromation in the databases of WHO library.
This is a very useful website where we can find the database related to world population and health.