Video made by NASA using new technologies for light capturing, giving a very interesting view, as the narrator with the velvet voice says, of human settlement on the planet and how social and geographical differences may cause great influence into the big picture.
If after the video you feel like you wanna more, on the links there is their website with more information, animations and images to download. They also have done a special map using Google Maps projecting this map of lights over the globe and there you can zoom, search for places and more. Very interesting, no?
More about the project
The map of lights combined with Google Maps