This video is Part 1 of 3 in a series of tutorials given by SEDAC deputy Director Alex de Sherbinin on the use of TerraViva! SEDAC, a map viewer and standalone software application (Microsoft Windows-based). TerraViva! SEDAC uses a powerful data-viewing engine and tools to enable the visualization and integration of hundreds of socioeconomic and environmental variables and layers, including a range of satellite-based data. TerraViva! SEDAC is of primary interest to researchers and analysts working in a variety of areas, from environmental and ecological sciences to the social and health sciences. To order a free CD with TerraViva! SEDAC software, visit http://sedac.ciesin.columbia.edu/terraVivaUserWeb/