Timelapse of Yellowstone Park after large wildfires in 1989. thumbnail: http://svs.gsfc.nasa.gov/vis/a010000/a010800/a010864/Yellowstone_iPad_cover_1024x576_gal.png

Above the Earth, Below the Surface: Landsat’s Role in Monitoring Water Quality
Safeguarding freshwater resources is crucial, and while scientists use a variety of ground-based techniques to gauge water quality, the Landsat program has provided water quality data from orbit for decades.