The Earth at Night Indicator, from Pitt T. Maner III
This is possibly a useful indicator of where development is occurring. The North Slope of Alaska, Pretoria-area South Africa, Nigeria and Gabon/Congo, Lanzhou-area China, and Puerto Rico really pop to name a few. Also there's an interesting line from around Caracas to Medellin Cali Bogota Colombia and then along west side of Andes to Quito and Cuenca, Ecuador.
Scientists unveiled today an unprecedented new look at our planet at night. A global composite image, constructed using cloud-free night images from a new NASA and National Oceanic and Atmospheric Administration (NOAA) satellite, shows the glow of natural and human-built phenomena across the planet in greater detail than ever before.