https://www.cnet.com/news/esa-honors-valentines-day-with-earth-hearts-seen-from-space/ > Not all of these love stories will have happy endings The emerald Aral Sea appears in the video. It was once the fourth largest lake in the world, but people siphoned off its water for irrigation.  > "Now only about 10 percent of the size it once was, the demise of this oasis is a striking example of humankind's impact on the environment and natural resources, and reported to be one of the world's major ecological disaster areas," ESA says.