A combined effort between researchers at the Carnegie Mellon University Robotics Institute, the U.S. Geological Survey (USGS) and Google provides users with easy access to 13 years of NASA Landsat imagery of the Earth’s surface. The new capability within Google Earth Engine lets users zoom in and out on any spot on the globe, moving back and forth in time between 1999 and 2011.
This is pretty good. Also pretty scary as it shows you how we are quickly fucking this planet. For example the image above shows you a section of the Amazon. The left in 1999, the right in 2011.