NASA on Vegas and sprawl

NASA recently posted a video on Flikr showing 28 years of development in Las Vegas as seen from space:

When Landsat 5 launched on March 1, 1972, Las Vegas was a smaller city. This image series, done in honor of the satellite’s 28th birthday, shows the desert city’s massive growth spurt since 1972. The outward expansion of the city is shown in a false-color [i.e., red = green space like parks and golf courses] time lapse of data from all the Landsat satellites.