It's weird to think they've been capturing images of the Earth's surface for 40 continuous years using this(or these) satellite(s).
So now they have a timelapse of the changes that Earth has undergone over 40 years from a birdseye view, and the changes can really only be described as startling.
The decimation of the Aral Sea is an absolute tragedy!
There's a link in there somewhere(expand the show more dialogue window) that takes you to a Google Earth link that takes you to EarthEngine.
Thanks to a serious petabyte collection of photos, it's here that we get to see the darker side of human short sightedness from an external point of view.