Mapping Human Activity

Mapping Human Activity — page 3
Breakthroughs The Map that Helped Cure Cholera In 1854 a severe outbreak of cholera occurred in the center of London England Cholera a deadly infection was assumed at the time to be caused by bad air Trying to find the cause of the infection a physician named John Snow made a map of the area He marked all the houses where people were sick or had died In the middle of the area was Broad Street Snow realized that the sick people had all used the water pump in the street To test his discovery Snow had the handle removed so the pump could not be used The cholera stopped spreading Snow had discovered that cholera was caused by dirty water This information can be used to decide which areas need more social services or where funding or government money needs to be given to help people Doctors can see places where cases of infectious diseases have broken out Retail chains or groups of many stores can map the amounts and types of goods that are sold from each store By doing so they can make sure each store has enough of the right goods in stock Fire and police departments can also map areas to figure out where to concentrate their resources For example fire departments will make sure that an area that is at-risk for wildfires will have a lot of fire-fighting resources John Snow’s map of cholera cases was the first example of using mapping to identify the source of an infection Did You Know Maps of human behavior show one of two types of data Some maps illustrate quantities of things such as how many supporters a football team has Other maps shows things that are not quantities such as the locations of teams Some maps use both methods together 6