See the spread of street lights
bit.ly/lights423 NASA’S cloud-free satellite map of our planet shows the distribution of artificial light around the globe in 2016, taking data from the clearest night views for each month. By doing so, the map highlights patterns of human settlement. The idea is that the map will be updated regularly so it can eventually plot significant future changes. Use the slider at the bottom of the page to view various dates and zoom in and out to see light coverage in specific areas. You can also compare the 2016 map with 2012’s to see the differences by visiting bit.ly/2012map423.