Health geography can offer a spatial understanding of the health of a population, the distribution of disease in an area, and the effects of the environment on health and disease. Health geography also deals with accessibility to healthcare and healthcare providers. This is also considered a subdiscipline of human geography; however, it requires a perception of other fields such as epidemiology, climatology. Although healthcare is a great public superior, it is not pure. However, it is not equally available to all individuals. Healthcare requires public services that are continuously distributed throughout the world. The health service is available only in some areas. Therefore, only the most financial and functional people will be able to access it. Financial status depends on the prices of a particular healthcare. Functional reflects the quantity and structure of health services provided. According to Environment Network News (ENN), a changing climate is likely to help women, in the United Nations. According to the UN woman, they bear the brunt of drought, rising seas, melting glaciers and other effects of climate change, but are mostly ignored in the debate over how to stop it, the UN debate over how stop it, The United Nation Population Fund said today in its 2009 State of the World Population report that the world's poor are most at risk from climate change and that most of the world's 1.5 billion people with a dollar a day or less are women (ENN). Therefore, poor women and women living in poor countries are among the people most exposed to climate change. However, their contribution is minimal, said UNFPA Executive Director Thoraya Ahmed Obaid. World leaders will meet at the United Nations summit on global warming in Copenhagen in December. The UN agency urged them to consider the women who would be harmed by climate change and how their voices can make a big difference. According to the World fact book, the population is 6,790,062,216 as of July. 2009.