Watch Las Vegas Grow Before Your Eyes (VIDEO)
NASA recently released a fun video that shows Las Vegas's continuous sprawl. The video was produced from images captured on one of NASA's Landsat satellites. In time-lapse it shows nearly 40 years of growth. From 1972 to when the video ends in 2010, the Las Vegas metro area can be seen spreading westward across the desert as the city's population skyrockets from slightly under 300,000 to almost 2 million.
NASA says the bright red areas of the video show healthy vegetation, mostly irrigated golf courses, while the gray areas are roads and buildings.