In this image from Sept. 24, 2012 provided by NASA, the Korean Peninsula is seen at night from a composite assembled from data acquired by the Suomi NPP satellite.
City lights at night are a fairly reliable indicator of where people live. But this isn’t always the case, and the Korean Peninsula shows why.
As of July 2012, South Korea’s population was estimated at roughly 49 million people, and North Korea’s population was estimated at about half that number. But where South Korea is gleaming with city lights, North Korea has hardly any lights at all, just a faint glimmer around Pyongyang.
The wide-area image shows the Korean Peninsula, parts of China and Japan, the Yellow Sea, and the Sea of Japan.
Photo: NASA / AP