HUMAN HEALTH Humans’ heath depends on a nice climate. Bad temperatures could cause loss of life. Hot temperatures can increase air and water pollutions, which can cause to harm humans. The worst diseases can cause harm to occur in warm areas. There are many of reasons why hot temperature causes the number of death to increase; people with heart problems are vulnerable because their cardiovascular system must work harder to keep their body cool during hot weather. Heat exhaustion and respiratory problems may increase.	Image obtained from Kathy
High temperatures also increase the concentration of ozone at ground level. The ozone layer in the atmosphere prevents harmful ultraviolet (UV) radiation from reaching earth’s surface, but in the lower layer, ozone is a harmful pollutant. Ozone damages lung tissue and people can have chest pains, nausea, and pulmonary congestion. If a warming increase by 4 degrees Fahrenheit the ozone concentrations could increase by 5 percent.
Image obtained from Kathy	Hospital admissions show that death rates increase during hot days. And it mostly happens to old or very young people living in cities. In July 1995, a heat wave killed over 700 people living in Chicago. Studies say that in Atlanta, for example, an increase of 2 degrees Fahrenheit would increase heat-related deaths from 78 to 247 people per year.  If people were to install air conditioning at home, then the death of people would decrease.
Deaths due to heat are higher than deaths due to cold weather. In the Untied States, about 1,000 people died from cold weather, but twice that much died from hot weather. Global warming may increase diseases especially those diseases that appear in warm areas. Diseases spread by mosquitoes and other insects may become more common because warm temperatures help them breed better. Public health programs could avoid this impact because it could help treat the spread of infections and other health problems. Source: “Yosemite Home.” United States Environmental Protection Agency. 26 July 2006.  26 July 2006 <http://yosemite.epa.gov/>.