Earthshots introduces remote sensing by showing examples of how environmental changes look from space.
These images show the metropolitan area of San Antonio, Texas. According to the U.S. Census Bureau, the population of the San Antonio metropolitan area was 863,669 in 1970. By 1990, the population had grown to 1.41 million. That growth continued, with increases to 1.71 million in 2000 and 2.14 million in 2010. The population change from 1990 to 2010 is a 25% increase, and in 2010, San Antonio ranked 25th in the country in population.
Click the other tabs to see the changes over time near Randolph Air Force Base in the northeast part of the city, near the reservoirs southeast of the city, and the pronounced urban/suburban expansion west of the city.
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