In comparing these two images, you get an idea of the rapid growth of Las Vegas, Nevada, between 1973 and 2002. Las Vegas is one of the fastest-growing US cities. Its high immigration rate and its areal extent have a negative effect on the water budget of this arid region. In order to solve this problem, politicians intervened: It is now forbidden to build new swimming pools, fountains must be operated using wastewater and the lawn can only be watered at certain days of the week.
Location: Las Vegas, USA
Pictures taken on June 10, 1973 and June 10, 2002
Sensors: Landsat 5 and Landsat 7