40 years of growth in Las Vegas 🏙️ The @nasa @usgs Landsat satellites can sense bigger changes in land cover, such as deforestation or urbanization. Landsat has also been studying our planet for nearly 54 years now. Such a long data record means that scientists can analyze how these changes unfold over the course of decades.
 Video description: Timelapse of satellite images showing urban growth in Las Vegas, Nevada. The timelapse starts in 1985. As the years count up, the gray grids of urbanization expand into the surrounding brown landscape and the city becomes larger and larger. By 2025, the city is much larger than it was at the beginning of the timelapse. Credit: NASA