OK. So I can see leaving a few on but one of the biggest office buildings for the State of Illinois in Springfield is the Stratton Building and it can NOT turn its lights off at night.
That is right night after night after night. But then the rest of the world looks like this:
http://www.environmentalgraffiti.com/news-city-lights-space
The Greatest Cities on Earth Shining into Space
Photo: NASA
Not only stars light up the sky at night; these incredible photographs taken from the space stations show earth in a whole new light.
The Nile Delta is illuminated above and shows the incredible distribution of the population. NASA describes it as a flower, with Cairo being a particularly bright spot at the base. Almost all of the people live along the life-giving river, while Tel Aviv, Israel is another bright spot, as is Amman in Jordan.
Photo: NASA
A stunning image of the city lights along the border of France and Italy. With the alps separating the two countries, you can clearly make out the centers of Lyon, Marseilles and Torino. The island of Corsica is just behind the brightly lit moon.
Photo: NASA
This image was taken by space shuttle Columbia and shows Ohio, Kentucky and Indiana. The three bright lights in the center are Springfield, Daytona and Cincinnati, with Indianapolis in the lower left. Lake Erie, Cleveland and Akron are in the upper left, and Lexington is at the center right edge. The white light at the top is a phenomenon called “airglow”
:}