Google Earth is a geographic information program that utilizes superimposed images obtained by satellites and aerial photography. As part of a project conducted by the Center for International Earth Science Information Network at Columbia University, Google Earth has developed an add-on program that allows users to find the population of a geographic location. Using Google Earth to estimate population involves downloading the add-on, finding an address, measuring a target area and identifying population density on a legend. The data in this add-on was obtained between 2003 and 2005 and the population number you obtain will not be exact. Writer Bio
